plagiarism thesis references

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Harvard Guide to Using Sources 

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• What Constitutes Plagiarism?

In academic writing, it is considered plagiarism to draw any idea or any language from someone else without adequately crediting that source in your paper. It doesn't matter whether the source is a published author, another student, a website without clear authorship, a website that sells academic papers, or any other person: Taking credit for anyone else's work is stealing, and it is unacceptable in all academic situations, whether you do it intentionally or by accident.

The ease with which you can find information of all kinds online means that you need to be extra vigilant about keeping track of where you are getting information and ideas and about giving proper credit to the authors of the sources you use. If you cut and paste from an electronic document into your notes and forget to clearly label the document in your notes, or if you draw information from a series of websites without taking careful notes, you may end up taking credit for ideas that aren't yours, whether you mean to or not.

It's important to remember that every website is a document with an author, and therefore every website must be cited properly in your paper. For example, while it may seem obvious to you that an idea drawn from Professor Steven Pinker's book The Language Instinct should only appear in your paper if you include a clear citation, it might be less clear that information you glean about language acquisition from the Stanford Encyclopedia of Philosophy website warrants a similar citation. Even though the authorship of this encyclopedia entry is less obvious than it might be if it were a print article (you need to scroll down the page to see the author's name, and if you don't do so you might mistakenly think an author isn't listed), you are still responsible for citing this material correctly. Similarly, if you consult a website that has no clear authorship, you are still responsible for citing the website as a source for your paper. The kind of source you use, or the absence of an author linked to that source, does not change the fact that you always need to cite your sources (see Evaluating Web Sources ).

Verbatim Plagiarism

If you copy language word for word from another source and use that language in your paper, you are plagiarizing verbatim . Even if you write down your own ideas in your own words and place them around text that you've drawn directly from a source, you must give credit to the author of the source material, either by placing the source material in quotation marks and providing a clear citation, or by paraphrasing the source material and providing a clear citation.

The passage below comes from Ellora Derenoncourt’s article, “Can You Move to Opportunity? Evidence from the Great Migration.”

Here is the article citation in APA style:

Derenoncourt, E. (2022). Can you move to opportunity? Evidence from the Great Migration. The American Economic Review , 112(2), 369–408. https://doi.org/10.1257/aer.20200002

Source material

Why did urban Black populations in the North increase so dramatically between 1940 and 1970? After a period of reduced mobility during the Great Depression, Black out-migration from the South resumed at an accelerated pace after 1940. Wartime jobs in the defense industry and in naval shipyards led to substantial Black migration to California and other Pacific states for the first time since the Migration began. Migration continued apace to midwestern cities in the 1950s and1960s, as the booming automobile industry attracted millions more Black southerners to the North, particularly to cities like Detroit or Cleveland. Of the six million Black migrants who left the South during the Great Migration, four million of them migrated between 1940 and 1970 alone.

Plagiarized version

While this student has written her own sentence introducing the topic, she has copied the italicized sentences directly from the source material. She has left out two sentences from Derenoncourt’s paragraph, but has reproduced the rest verbatim:

But things changed mid-century. After a period of reduced mobility during the Great Depression, Black out-migration from the South resumed at an accelerated pace after 1940. Wartime jobs in the defense industry and in naval shipyards led to substantial Black migration to California and other Pacific states for the first time since the Migration began. Migration continued apace to midwestern cities in the 1950s and1960s, as the booming automobile industry attracted millions more Black southerners to the North, particularly to cities like Detroit or Cleveland.

Acceptable version #1: Paraphrase with citation

In this version the student has paraphrased Derenoncourt’s passage, making it clear that these ideas come from a source by introducing the section with a clear signal phrase ("as Derenoncourt explains…") and citing the publication date, as APA style requires.

But things changed mid-century. In fact, as Derenoncourt (2022) explains, the wartime increase in jobs in both defense and naval shipyards marked the first time during the Great Migration that Black southerners went to California and other west coast states. After the war, the increase in jobs in the car industry led to Black southerners choosing cities in the midwest, including Detroit and Cleveland.

Acceptable version #2 : Direct quotation with citation or direct quotation and paraphrase with citation

If you quote directly from an author and cite the quoted material, you are giving credit to the author. But you should keep in mind that quoting long passages of text is only the best option if the particular language used by the author is important to your paper. Social scientists and STEM scholars rarely quote in their writing, paraphrasing their sources instead. If you are writing in the humanities, you should make sure that you only quote directly when you think it is important for your readers to see the original language.

In the example below, the student quotes part of the passage and paraphrases the rest.

But things changed mid-century. In fact, as Derenoncourt (2022) explains, “after a period of reduced mobility during the Great Depression, Black out-migration from the South resumed at an accelerated pace after 1940” (p. 379). Derenoncourt notes that after the war, the increase in jobs in the car industry led to Black southerners choosing cities in the midwest, including Detroit and Cleveland.

Mosaic Plagiarism

If you copy bits and pieces from a source (or several sources), changing a few words here and there without either adequately paraphrasing or quoting directly, the result is mosaic plagiarism . Even if you don't intend to copy the source, you may end up with this type of plagiarism as a result of careless note-taking and confusion over where your source's ideas end and your own ideas begin. You may think that you've paraphrased sufficiently or quoted relevant passages, but if you haven't taken careful notes along the way, or if you've cut and pasted from your sources, you can lose track of the boundaries between your own ideas and those of your sources. It's not enough to have good intentions and to cite some of the material you use. You are responsible for making clear distinctions between your ideas and the ideas of the scholars who have informed your work. If you keep track of the ideas that come from your sources and have a clear understanding of how your own ideas differ from those ideas, and you follow the correct citation style, you will avoid mosaic plagiarism.

Indeed, of the more than 3500 hours of instruction during medical school, an average of less than 60 hours are devoted to all of bioethics, health law and health economics combined . Most of the instruction is during the preclinical courses, leaving very little instructional time when students are experiencing bioethical or legal challenges during their hands-on, clinical training. More than 60 percent of the instructors in bioethics, health law, and health economics have not published since 1990 on the topic they are teaching.

--Persad, G.C., Elder, L., Sedig,L., Flores, L., & Emanuel, E. (2008). The current state of medical school education in bioethics, health law, and health economics. Journal of Law, Medicine, and Ethics 36 , 89-94.

Students can absorb the educational messages in medical dramas when they view them for entertainment. In fact, even though they were not created specifically for education, these programs can be seen as an entertainment-education tool [43, 44]. In entertainment-education shows, viewers are exposed to educational content in entertainment contexts, using visual language that is easy to understand and triggers emotional engagement [45]. The enhanced emotional engagement and cognitive development [5] and moral imagination make students more sensitive to training [22].

--Cambra-Badii, I., Moyano, E., Ortega, I., Josep-E Baños, & Sentí, M. (2021). TV medical dramas: Health sciences students’ viewing habits and potential for teaching issues related to bioethics and professionalism. BMC Medical Education, 21 , 1-11. doi: https://doi.org/10.1186/s12909-021-02947-7

Paragraph #1.

All of the ideas in this paragraph after the first sentence are drawn directly from Persad. But because the student has placed the citation mid-paragraph, the final two sentences wrongly appear to be the student’s own idea:

In order to advocate for the use of medical television shows in the medical education system, it is also important to look at the current bioethical curriculum. In the more than 3500 hours of training that students undergo in medical school, only about 60 hours are focused on bioethics, health law, and health economics (Persad et al, 2008). It is also problematic that students receive this training before they actually have spent time treating patients in the clinical setting. Most of these hours are taught by instructors without current publications in the field.

Paragraph #2.

All of the italicized ideas in this paragraph are either paraphrased or taken verbatim from Cambra-Badii, et al., but the student does not cite the source at all. As a result, readers will assume that the student has come up with these ideas himself:

Students can absorb the educational messages in medical dramas when they view them for entertainment. It doesn’t matter if the shows were designed for medical students; they can still be a tool for education. In these hybrid entertainment-education shows, viewers are exposed to educational content that triggers an emotional reaction. By allowing for this emotional, cognitive, and moral engagement, the shows make students more sensitive to training . There may be further applications to this type of education: the role of entertainment as a way of encouraging students to consider ethical situations could be extended to other professions, including law or even education.

The student has come up with the final idea in the paragraph (that this type of ethical training could apply to other professions), but because nothing in the paragraph is cited, it reads as if it is part of a whole paragraph of his own ideas, rather than the point that he is building to after using the ideas from the article without crediting the authors.

Acceptable version

In the first paragraph, the student uses signal phrases in nearly every sentence to reference the authors (“According to Persad et al.,” “As the researchers argue,” “They also note”), which makes it clear throughout the paragraph that all of the paragraph’s information has been drawn from Persad et al. The student also uses a clear APA in-text citation to point the reader to the original article. In the second paragraph, the student paraphrases and cites the source’s ideas and creates a clear boundary behind those ideas and his own, which appear in the final paragraph.

In order to advocate for the use of medical television shows in the medical education system, it is also important to look at the current bioethical curriculum. According to Persad et al. (2008), only about one percent of teaching time throughout the four years of medical school is spent on ethics. As the researchers argue, this presents a problem because the students are being taught about ethical issues before they have a chance to experience those issues themselves. They also note that more than sixty percent of instructors teaching bioethics to medical students have no recent publications in the subject.

The research suggests that medical dramas may be a promising source for discussions of medical ethics. Cambra-Badii et al. (2021) explain that even when watched for entertainment, medical shows can help viewers engage emotionally with the characters and may prime them to be more receptive to training in medical ethics. There may be further applications to this type of education: the role of entertainment as a way of encouraging students to consider ethical situations could be extended to other professions, including law or even education.

Inadequate Paraphrase

When you paraphrase, your task is to distill the source's ideas in your own words. It's not enough to change a few words here and there and leave the rest; instead, you must completely restate the ideas in the passage in your own words. If your own language is too close to the original, then you are plagiarizing, even if you do provide a citation.

In order to make sure that you are using your own words, it's a good idea to put away the source material while you write your paraphrase of it. This way, you will force yourself to distill the point you think the author is making and articulate it in a new way. Once you have done this, you should look back at the original and make sure that you have represented the source’s ideas accurately and that you have not used the same words or sentence structure. If you do want to use some of the author's words for emphasis or clarity, you must put those words in quotation marks and provide a citation.

The passage below comes from Michael Sandel’s article, “The Case Against Perfection.” Here’s the article citation in MLA style:

Sandel, Michael. “The Case Against Perfection.” The Atlantic , April 2004, https://www.theatlantic.com/magazine/archive/2004/04/the-case-against-pe... .

Though there is much to be said for this argument, I do not think the main problem with enhancement and genetic engineering is that they undermine effort and erode human agency. The deeper danger is that they represent a kind of hyperagency—a Promethean aspiration to remake nature, including human nature, to serve our purposes and satisfy our desires. The problem is not the drift to mechanism but the drive to mastery. And what the drive to mastery misses and may even destroy is an appreciation of the gifted character of human powers and achievements.

The version below is an inadequate paraphrase because the student has only cut or replaced a few words: “I do not think the main problem” became “the main problem is not”; “deeper danger” became “bigger problem”; “aspiration” became “desire”; “the gifted character of human powers and achievements” became “the gifts that make our achievements possible.”

The main problem with enhancement and genetic engineering is not that they undermine effort and erode human agency. The bigger problem is that they represent a kind of hyperagency—a Promethean desire to remake nature, including human nature, to serve our purposes and satisfy our desires. The problem is not the drift to mechanism but the drive to mastery. And what the drive to mastery misses and may even destroy is an appreciation of the gifts that make our achievements possible (Sandel).

Acceptable version #1: Adequate paraphrase with citation

In this version, the student communicates Sandel’s ideas but does not borrow language from Sandel. Because the student uses Sandel’s name in the first sentence and has consulted an online version of the article without page numbers, there is no need for a parenthetical citation.

Michael Sandel disagrees with the argument that genetic engineering is a problem because it replaces the need for humans to work hard and make their own choices. Instead, he argues that we should be more concerned that the decision to use genetic enhancement is motivated by a desire to take control of nature and bend it to our will instead of appreciating its gifts.

Acceptable version #2: Direct quotation with citation

In this version, the student uses Sandel’s words in quotation marks and provides a clear MLA in-text citation. In cases where you are going to talk about the exact language that an author uses, it is acceptable to quote longer passages of text. If you are not going to discuss the exact language, you should paraphrase rather than quoting extensively.

The author argues that “the main problem with enhancement and genetic engineering is not that they undermine effort and erode human agency,” but, rather that “they represent a kind of hyperagency—a Promethean desire to remake nature, including human nature, to serve our purposes and satisfy our desires. The problem is not the drift to mechanism but the drive to mastery. And what the drive to mastery misses and may even destroy is an appreciation of the gifts that make our achievements possible” (Sandel).

Uncited Paraphrase

When you use your own language to describe someone else's idea, that idea still belongs to the author of the original material. Therefore, it's not enough to paraphrase the source material responsibly; you also need to cite the source, even if you have changed the wording significantly. As with quoting, when you paraphrase you are offering your reader a glimpse of someone else's work on your chosen topic, and you should also provide enough information for your reader to trace that work back to its original form. The rule of thumb here is simple: Whenever you use ideas that you did not think up yourself, you need to give credit to the source in which you found them, whether you quote directly from that material or provide a responsible paraphrase.

The passage below comes from C. Thi Nguyen’s article, “Echo Chambers and Epistemic Bubbles.”

Here’s the citation for the article, in APA style:

Nguyen, C. (2020). Echo chambers and epistemic bubbles. Episteme, 17 (2), 141-161. doi:10.1017/epi.2018.32

Epistemic bubbles can easily form accidentally. But the most plausible explanation for the particular features of echo chambers is something more malicious. Echo chambers are excellent tools to maintain, reinforce, and expand power through epistemic control. Thus, it is likely (though not necessary) that echo chambers are set up intentionally, or at least maintained, for this functionality (Nguyen, 2020).

The student who wrote the paraphrase below has drawn these ideas directly from Nguyen’s article but has not credited the author. Although she paraphrased adequately, she is still responsible for citing Nguyen as the source of this information.

Echo chambers and epistemic bubbles have different origins. While epistemic bubbles can be created organically, it’s more likely that echo chambers will be formed by those who wish to keep or even grow their control over the information that people hear and understand.

In this version, the student eliminates any possible ambiguity about the source of the ideas in the paragraph. By using a signal phrase to name the author whenever the source of the ideas could be unclear, the student clearly attributes these ideas to Nguyen.

According to Nguyen (2020), echo chambers and epistemic bubbles have different origins. Nguyen argues that while epistemic bubbles can be created organically, it’s more likely that echo chambers will be formed by those who wish to keep or even grow their control over the information that people hear and understand.

Uncited Quotation

When you put source material in quotation marks in your essay, you are telling your reader that you have drawn that material from somewhere else. But it's not enough to indicate that the material in quotation marks is not the product of your own thinking or experimentation: You must also credit the author of that material and provide a trail for your reader to follow back to the original document. This way, your reader will know who did the original work and will also be able to go back and consult that work if they are interested in learning more about the topic. Citations should always go directly after quotations.

The passage below comes from Deirdre Mask’s nonfiction book, The Address Book: What Street Addresses Reveal About Identity, Race, Wealth, and Power.

Here is the MLA citation for the book:

Mask, Deirdre. The Address Book: What Street Addresses Reveal About Identity, Race, Wealth, and Power. St. Martin’s Griffin, 2021.

In New York, even addresses are for sale. The city allows a developer, for the bargain price of $11,000 (as of 2019), to apply to change the street address to something more attractive.

It’s not enough for the student to indicate that these words come from a source; the source must be cited:

After all, “in New York, even addresses are for sale. The city allows a developer, for the bargain price of $11,000 (as of 2019), to apply to change the street address to something more attractive.”

Here, the student has cited the source of the quotation using an MLA in-text citation:

After all, “in New York, even addresses are for sale. The city allows a developer, for the bargain price of $11,000 (as of 2019), to apply to change the street address to something more attractive” (Mask 229).

Using Material from Another Student's Work

In some courses you will be allowed or encouraged to form study groups, to work together in class generating ideas, or to collaborate on your thinking in other ways. Even in those cases, it's imperative that you understand whether all of your writing must be done independently, or whether group authorship is permitted. Most often, even in courses that allow some collaborative discussion, the writing or calculations that you do must be your own. This doesn't mean that you shouldn't collect feedback on your writing from a classmate or a writing tutor; rather, it means that the argument you make (and the ideas you rely on to make it) should either be your own or you should give credit to the source of those ideas.

So what does this mean for the ideas that emerge from class discussion or peer review exercises? Unlike the ideas that your professor offers in lecture (you should always cite these), ideas that come up in the course of class discussion or peer review are collaborative, and often not just the product of one individual's thinking. If, however, you see a clear moment in discussion when a particular student comes up with an idea, you should cite that student. In any case, when your work is informed by class discussions, it's courteous and collegial to include a discursive footnote in your paper that lets your readers know about that discussion. So, for example, if you were writing a paper about the narrator in Tim O'Brien's The Things They Carried and you came up with your idea during a discussion in class, you might place a footnote in your paper that states the following: "I am indebted to the members of my Expos 20 section for sparking my thoughts about the role of the narrator as Greek Chorus in Tim O'Brien's The Things They Carried ."

It is important to note that collaboration policies can vary by course, even within the same department, and you are responsible for familiarizing yourself with each course's expectation about collaboration. Collaboration policies are often stated in the syllabus, but if you are not sure whether it is appropriate to collaborate on work for any course, you should always consult your instructor.

• The Exception: Common Knowledge
• Other Scenarios to Avoid
• Why Does it Matter if You Plagiarize?
• How to Avoid Plagiarism
• Harvard University Plagiarism Policy

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• Avoiding Plagiarism
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References, citations and avoiding plagiarism

Referencing styles.

• Getting Started
• Assignments
• Independent research
• Understanding a reference
• Managing your references
• How to reference
• Acknowledging and referencing AI
• Harvard referencing
• Vancouver referencing
• APA referencing
• Chicago referencing
• OSCOLA referencing
• MHRA referencing
• MLA referencing
• Avoiding plagiarism
• Further help

There are many different conventions, or approaches, to effective referencing, depending on the referencing style being used, and these can be separated into three standard systems for citing sources:

• Author-date system, e.g. Harvard.
• Numeric system, e.g. Vancouver.
• Notes and bibliography system, e.g. MHRA.

There are different versions of each of these approaches, some of which are discipline-specific.  For example, APA is an author-date system that is specific to Psychology, and OSCOLA is a notes and bibliography system only used in Law. 

Be aware, there are many versions of the Harvard and Vancouver referencing styles, there is no single 'correct' style.  If you refer to more than one source for guidance on Harvard, for example, you may notice inconsistencies so always try to stick to one source for guidance. The most important thing is to remain consistent.

Which referencing style should I use?

Recognising different referencing styles.

UCL does not have a standard referencing style for use across the university, but some UCL departments, or even individual academic programmes, may have a preferred referencing style. 

Consult your programme handbook or ask your UCL department which style you should use.

If you are writing for publication, you will find the journal or publisher will have its own style and guidelines

​ Here is an example of an in-text citation in an author-date style:

In their review of the literature (Knapik et al., 2015) some themes emerge …

This style uses an approach in which an author-date are located / identified directly within the text when a source is used, which then allows the reader to find the full reference to the source at the end of the essay on a separate references list (or bibliography).

Here is an example of an in-text citation in a numeric style:

In their review of the literature (1) some themes emerge …

This style uses a numbering system, where an alpha-numeric figure identifies that a source has been used/referenced. The reader can then locate the full reference in the reference list at the end of the essay.

Here is an example of an in-text citation in a notes and bibliography style:

In their review of the literature 1  some themes emerge …

This style uses footnotes or endnotes, where the full details of the source are given in the footnote (at the bottom of the current page), or in the endnotes (at the end of the essay). If the same reference occurs again an abbreviated form is used in the footnote/endnote. All references also appear in full on a separate references list (or bibliography) at the end of the essay.

Key messages

• Find out which style you are required to use in your work.
• Ensure you are consistent in your use of that style.

Referencing style guides

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Write it Right - A guide to Harvard referencing style

• Referencing

What is Plagiarism?

Examples of plagiarism, avoiding plagiarism, common knowledge.

• Referencing & Citing
• Paraphrasing
• Reference List & Bibliography
• Elements in References
• Journal articles
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Plagiarism is defined as:   

the unacknowledged use of someone else’s work. This includes material or ideas from any (published or unpublished) sources, whether print, electronic (even if freely available on the internet) or audiovisual. Using the words or ideas of others without citing and referencing them would be construed as plagiarism, and is a very serious academic offence. At the end of the day, it is regarded as the stealing of intellectual property (Pears and Shields, 2019, p. 4).

When you plagiarise, you pass off someone else’s work, whether intentionally or unintentionally, as your own for your own benefit. You quote, paraphrase, summarise or copy material without acknowledging the original sources. When you plagiarise, you are not following correct referencing guidelines. You are guilty of academic dishonesty.

Source: NEIU Libraries (2020)  What is academic honesty?

Some examples of plagiarism (Handley and Cox, 2007) include:

• Copying chunks of text without using quotation marks and without appropriate acknowledgement, for example, cutting-and-pasting from websites or online research papers, or copying papers by other students.
• Copying text and making very minor changes and without appropriate acknowledgement. This is an example of unacceptable paraphrasing.
• Copying lyrics (audio plagiarism) or photos, images and designs (visual plagiarism) without crediting the original sources.
• Duplicating your own work, for example, ‘recycling’ a piece of your own work that you have previously submitted for another module or course (self-plagiarism).
• Citing and referencing sources that you did not use.

The 3 main tips for avoiding plagiarism are:

• Learn how to reference properly using the recommended style for your School/Department.
• Leave sufficient time for referencing before submitting your assignment, or better still, make a point of recording your references as you go. 
• Remember the basic motto for referencing - always give credit where credit is due - and don’t forget to include references to any material you use in your assignment that is not your own.

Some material is common knowledge and does not need to be referenced. Common knowledge includes facts that are generally known, or information that is expected to be known by someone working in a particular field.

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Prevent plagiarism, run a free plagiarism check.

• Knowledge Base

How to Avoid Plagiarism | Tips on Citing Sources

Published on 6 December 2021 by Tegan George . Revised on 3 April 2023.

When you write an academic paper, you build upon the work of others and use various credible sources for information and evidence. To avoid plagiarism, you need to correctly incorporate these sources into your text.

• Keeping track of the sources you consult in your research
• Paraphrasing or quoting from your sources (and adding your own ideas)
• Crediting the original author in an in-text citation and in your reference list
• Using a plagiarism checker before you submit

Even accidental plagiarism can have serious consequences , so take care with how you integrate sources into your writing.

Table of contents

Keeping track of your sources, avoiding plagiarism when quoting, avoiding plagiarism when paraphrasing, citing your sources correctly, using a plagiarism checker, checklist: plagiarism prevention, free lecture slides, frequently asked questions about plagiarism.

One of the most common ways that students commit plagiarism is by simply forgetting where an idea came from and unintentionally presenting it as their own. You can easily avoid this pitfall by keeping your notes organised and compiling a list of citations as you go.

Clearly label which thoughts are yours and which aren’t in your notes, highlight statements that need citations, and carefully mark any text copied directly from a source with quotation marks.

In the example below, red indicates a claim that requires a source, blue indicates information paraphrased or summarised from a source, and green indicates a direct quotation.

Notes for my paper on global warming

• Greenhouse gas emissions trap heat and raise global temperatures [cite details]
• Causes more severe weather: hurricanes, fires, water scarcity [cite examples]
• Animal habitats across the world are under threat from climate change [cite examples]
• Just this year, 23 species have been declared extinct (BBC News 2021)
• ‘Animals are changing shape… some are growing bigger wings, some are sprouting longer ears and others are growing larger bills’ in order to cool off (Zeldovich 2021)

Managing sources with the Scribbr Citation Generator

To make your life easier later, make sure to write down the full details of every source you consult. That includes not only books and journal articles, but also things like websites, magazine articles, and videos. This makes it easy to go back and check where you found a phrase, fact, or idea that you want to use in your paper.

Scribbr’s Citation Generator allows you to start building and managing your reference list as you go, saving time later. When you’re ready to submit, simply download your reference list!

Generate accurate citations with Scribbr

Prevent plagiarism, run a free check..

Quoting means copying a piece of text word for word. The copied text must be introduced in your own words, enclosed in quotation marks , and correctly attributed to the original author.

In general, quote sparingly. Quotes are appropriate when:

• You’re using an exact definition, introduced by the original author
• It is impossible for you to rephrase the original text without losing its meaning
• You’re analyzing the use of language in the original text
• You want to maintain the authority and style of the author’s words

Long quotations should be formatted as block quotes . But for longer blocks of text, it’s usually better to paraphrase instead.

Paraphrasing means using your own words to explain something from a source.

Paraphrasing does not mean just switching out a few words from a copy-pasted text. To paraphrase properly, you should rewrite the author’s point in your own words to show that you have fully understood it.

Every time you quote or paraphrase, you must include an in-text or footnote citation clearly identifying the original author. Each citation must correspond to a full reference in the reference list or bibliography at the end of your paper.

This acknowledges the source of your information, avoiding plagiarism, and it helps your readers locate the source for themselves if they would like to learn more.

There are many different citation styles, each with its own rules. Your instructor may assign a particular style for you to use, or you may be able to choose. The most important thing is to apply one style consistently throughout the text.

The examples below follow APA Style .

Citing a single source

Citing multiple sources.

If you quote multiple sources in one sentence, make sure to cite them separately so that it’s clear which material came from which source.

To create correctly formatted source citations, you can use our free Citation Generator.

APA Citation Generator MLA Citation Generator

And if you’re citing in APA Style, consider using Scribbr’s Citation Checker , a unique tool that scans your citations for errors. It can detect inconsistencies between your in-text citations and your reference list, as well as making sure your citations are flawlessly formatted.

Most universities use plagiarism checkers like Turnitin to detect potential plagiarism. Here’s how plagiarism checkers work : they scan your document, compare it to a database of webpages and publications, and highlight passages that appear similar to other texts.

Consider using a plagiarism checker yourself before submitting your paper. This allows you to identify issues that could constitute accidental plagiarism, such as:

• Forgotten or misplaced citations
• Missing quotation marks
• Paraphrased material that’s too similar to the original text

Then you can easily fix any instances of potential plagiarism.

There are differences in accuracy and safety between plagiarism checkers. To help students choose, we conducted extensive research comparing the best plagiarism checkers .

When using someone else’s exact words, I have properly formatted them as a quote .

When using someone else’s ideas, I have properly paraphrased , expressing the idea completely in my own words.

I have included an in-text citation every time I use words, ideas, or information from a source.

Every source I cited is included in my reference list or bibliography .

I have consistently followed the rules of my required citation style .

I have not committed self-plagiarism by reusing any part of a previous paper.

I have used a reliable plagiarism checker as a final check.

Your document should be free from plagiarism!

Are you a teacher or lecturer who would like to educate your students about plagiarism? You can download our free lecture slides, available for Google Slides and Microsoft PowerPoint.

Open Google Slides Download PowerPoint

Accidental plagiarism is one of the most common examples of plagiarism . Perhaps you forgot to cite a source, or paraphrased something a bit too closely. Maybe you can’t remember where you got an idea from, and aren’t totally sure if it’s original or not.

These all count as plagiarism, even though you didn’t do it on purpose. When in doubt, make sure you’re citing your sources . Also consider running your work through a plagiarism checker tool prior to submission, which work by using advanced database software to scan for matches between your text and existing texts.

Scribbr’s Plagiarism Checker takes less than 10 minutes and can help you turn in your paper with confidence.

To avoid plagiarism when summarising an article or other source, follow these two rules:

• Write the summary entirely in your own words by   paraphrasing the author’s ideas.
• Reference the source with an in-text citation and a full reference so your reader can easily find the original text.

Plagiarism can be detected by your professor or readers if the tone, formatting, or style of your text is different in different parts of your paper, or if they’re familiar with the plagiarised source.

Many universities also use   plagiarism detection software like Turnitin’s, which compares your text to a large database of other sources, flagging any similarities that come up.

It can be easier than you think to commit plagiarism by accident. Consider using a   plagiarism checker prior to submitting your essay to ensure you haven’t missed any citations.

Some examples of plagiarism include:

• Copying and pasting a Wikipedia article into the body of an assignment
• Quoting a source without including a citation
• Not paraphrasing a source properly (e.g. maintaining wording too close to the original)
• Forgetting to cite the source of an idea

The most surefire way to   avoid plagiarism is to always cite your sources . When in doubt, cite!

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the ‘Cite this Scribbr article’ button to automatically add the citation to our free Reference Generator.

George, T. (2023, April 03). How to Avoid Plagiarism | Tips on Citing Sources. Scribbr. Retrieved 9 April 2024, from https://www.scribbr.co.uk/preventing-plagiarism/avoiding-plagiarism/

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Plagiarism Prevention Resource Kit: Citations

Citations video playlist.

Introduction

In APA style, citations include at least these two elements:

• publication year

A third element is necessary when citing a specific part of a source, such as when quoting, and entails an indicator of the specific part. This element is often a page or paragraph number. A page number is used for a source with pages, such as a book or journal article.  A paragraph number is used for a source without pagination, such as a long webpage. The indicator can alternatively be the section of a document for which a page or paragraph number is not a suitable choice, a timestamp for videos or audiobooks, or a slide number in a PowerPoint presentation. Some examples include the following:

See APA 7, Section 8.13 for more information and examples.

Citations in your paper are necessary to provide credit to the proper sources; failure to cite properly could result in plagiarism.

Although it is important to cite any ideas retrieved from sources, such as paraphrased explanations, quotations, statistics, or figures. It is not necessary to cite common knowledge (i.e., you do not need to cite that the Earth is round). Credit a source in each sentence that references material from a source. For examples of how often to cite a source in a paragraph, see some examples on the Citing Sources Properly page.

APA style citations are all in-text citations, meaning the information about the source appears in the body of the paper rather than in endnotes or footnotes.

How to Cite

Here is an example of citations within a paragraph:

True and Noble (2009) found many students are highly confused about citation. They also indicated some students receive erroneous information about citations or some professors are too lenient with them, causing even more confusion. In fact, Jones (2011) found 99 out of 100 students agreed citing work could seem like a "complex, maddening process" (p. 64).

In this example, note five main elements:

Sources are cited narratively or parenthetically in each sentence in which they are used. The author and date citation can be left out, however, in contiguous following sentences that further explain the same source as long as the sentences clearly signal that the same source is being discussed. Parenthetical citations appear within the ending punctuation of a sentence. Publication years appear after the authors. Quotation page numbers appear after the quotation. Note that the page number is represented as p. 64, and a paragraph would be represented as para. 4. If a quotation spans multiple pages, use pp. The full word "and" is used for citations in the narrative, and the ampersand symbol (&) is used for parenthetical citations.

How Often to Cite

Citation issues can appear when writers use too few citations, use too many citations, or use too much information from a source in place of blending the source information with their own informed analysis and commentary on the information. Here are some factors to consider when citing sources:

1. Did I provide adequate commentary on the cited material?

Cited material should illustrate rather than substitute for your point. Make sure your paper is more than a collection of ideas from your sources; it should provide an original interpretation of that material. For help with creating this commentary while also avoiding personal opinion, see our Commentary vs. Opinion resource.

2. Did I begin and end my paragraphs in my own voice?

The opening sentence of each paragraph should be your topic sentence , and the final sentence in the paragraph should conclude your point and lead into the next. Without these elements of a paragraph, you leave your reader without a sense of the paragraph's main purpose. Additionally, the reader may not understand your reasons for including that material.

3. Have I used the cited material to support my specific thesis?

All material that you cite should contribute to your main argument (also called a thesis or purpose statement). When reading the literature, keep that argument in mind, noting ideas or research that speak to the issues in your particular draft. See our synthesis demonstration for help learning how to use the literature to support your thesis.

4. Have I relied too heavily on one source?

Most research papers should include a variety of sources from the last 3-5 years. You may find one particularly useful study, but try to balance your use and citations of that study with research from other authors. Otherwise, your paper becomes a book report on that one source and lacks richness of theoretical perspective.

5. Have I included too many direct quotations?

In academic writing, rely primarily on paraphrase when using evidence. Although direct quotations can be useful for illustrating a rhetorical choice of your author, in most other cases paraphrasing the material is more appropriate. Using your own words by paraphrasing will better demonstrate your understanding and will allow you to emphasize the ways in which the ideas contribute to your paper's main argument.

Related Resources

Knowledge Check: Citations Overview

Knowledge Check

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• v.59(3); 2021

Plagiarism detection and prevention: a primer for researchers

Olena zimba.

1 Department of Internal Medicine No. 2, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine

Armen Yuri Gasparyan

2 Departments of Rheumatology and Research and Development, Dudley Group NHS Foundation Trust (Teaching Trust of the University of Birmingham, UK), Russells Hall Hospital, Dudley, West Midlands, UK

Plagiarism is an ethical misconduct affecting the quality, readability, and trustworthiness of scholarly publications. Improving researcher awareness of plagiarism of words, ideas, and graphics is essential for avoiding unacceptable writing practices. Global editorial associations have publicized their statements on strategies to clean literature from redundant, stolen, and misleading information. Consulting related documents is advisable for upgrading author instructions and warning plagiarists of academic and other consequences of the unethical conduct. A lack of creative thinking and poor academic English skills are believed to compound most instances of redundant and “copy-and-paste” writing. Plagiarism detection software largely relies on reporting text similarities. However, manual checks are required to reveal inappropriate referencing, copyright violations, and substandard English writing.

Medical researchers and authors may improve their writing skills and avoid the same errors by consulting the list of retractions due to plagiarism which are tracked on the PubMed platform and discussed on the Retraction Watch blog.

Introduction

Plagiarism is one of the frequent forms of publication ethics violation. Researchers from all over the world may witness such a violation in their academic environment, and some of them may intentionally or unintentionally reuse their own or others’ intellectual property without proper processing and crediting [ 1 , 2 ].

Medical and allied health researchers are reminded that the Medical Subject Headings (MeSH) term defines plagiarism as “passing off as one’s own the work of another without credit” ( https://www.ncbi.nlm.nih.gov/mesh/?term=plagiarism ). This term was introduced back in 1990. Since then, global understanding of plagiarism has evolved to reflect a variety of unethical reuses of ideas, texts, and graphical materials [ 3 ].

The global open access movement has made it possible to easily reveal most instances of plagiarism, including copying texts and graphics across digitized old and new sources. The resultant retractions of erroneous and otherwise unethical articles have predominantly affected biomedical authors from China, India and Iran, particularly those who publish in low-impact journals [ 4 ]. The digitization of editorial management and regular scanning of countless online platforms have enabled detection of unethical reuse in manuscripts undergoing peer review [ 5 ]. Peer review digitization has also allowed exposure of instances of stealing ideas and materials which are intended for confidential and privileged evaluation by reviewers [ 6 ].

Intellectual theft is increasingly viewed as a serious ethical transgression in countries entering the global academic competition and adjusting their research and development policies to the universally acceptable norms. The awareness of various forms of plagiarism is growing due to the international research cooperation and quality publishing that involve academics with various language and cultural traditions. However, the issue of plagiarism in the globalized world of science is complicated due to variably perceived definitions of the unethical conduct, recycling of one’s own published materials, and unacceptable duplication of identical scientific information in different languages [ 7 ].

Editorial guidance on plagiarism

Global editorial recommendations contain a number of points instructing journal editors how to deal with suspected plagiarism and redundant/overlapping materials at pre- and post-publication stages. Core practices of the Committee on Publication Ethics (COPE) encourage editors to define plagiarism in their instructions and explicitly guide readers on how to reuse their published articles [ 8 ]. Also, all authors of manuscripts and published articles with misappropriation of intellectual property should be aware of their full responsibility for any wrongdoing at any stage. In case of suspicion, editors may question all co-authors and related authorities [ 9 ].

The Council of Science Editors (CSE) defines piracy and plagiarism as related violations of publication ethics with unauthorized reproduction of ideas, data, methods, and graphical materials, including those of the plagiarist (self-plagiarism and duplicate publication) [ 10 ]. Plagiarism, falsification, and fabrication are viewed by the CSE as different forms of research misconduct which may justify academic sanctions imposed by relevant national bodies and professional societies. To avoid any accusations of plagiarism, authors need to properly process primary literature and credit generators of ideas and other intellectual properties. Editors, in turn, should be skilled to identify copied and redundant materials by using advanced software and various other means.

Finally, the World Association of Medical Editors (WAME) reaffirms editorial intolerance of plagiarism in unpublished and published manuscripts and proposes to treat self-plagiarism differently, particularly in the case of linguistically redundant description of methods and other inevitable and unintentional duplications [ 11 ].

Creative thinking and plagiarism

Plagiarism is often revealed in works of novice non-Anglophone authors who are exposed to a conservative educational environment that encourages copying and memorizing and rejects creative thinking [ 12 , 13 ]. The gaps in training on research methodology, ethical writing, and acceptable editing support are also viewed as barriers to targeting influential journals by medical students and graduates [ 14 ].

The ease of accessing quality online articles of experienced authors, unawareness of plagiarism, and uncertain research ethics policies may push researchers in some academic institutions to copy, recycle, and produce unethical publications [ 15 , 16 ].

A large survey of Western and Eastern European Bachelor and Master degree students ( n = 1757) revealed diametrically opposite approaches to increasing awareness of plagiarism and arranging anti-plagiarism courses, with Polish students lacking training in these fields [ 17 ]. Additionally, a survey of 1100 undergraduate medical students in Pakistan pointed to a high percentage of unawareness of plagiarism (87%) and instances of plagiarism (71%) [ 18 ]. Finally, a nationwide survey of 706 Iranian medical graduates and faculty members revealed that the majority of the surveyees (74%) had not received any training on plagiarism [ 19 ]. The same survey revealed that 11% had not even heard about such an ethical transgression.

The existence of numerous editing and copying agencies preying on novice researchers, students, and authors may further complicate the issue and negatively affect scholarly publishing in China and some other non-Anglophone countries [ 9 ].

Instances of plagiarism

Several forms of plagiarism can be distinguished based on confounders of this misconduct ( Table I ). Depending on author intentions, plagiarism is classified into intentional and unintentional (accidental) forms [ 20 ]. The former is a deliberate unethical act aimed at misleading readers by skilled authors who steal ideas, texts, and graphics and present stolen materials as their own. Its detection is followed by academic sanctions and other punishments. The unintentional form may surface due to incorrectly paraphrasing and referencing previously published works [ 21 ].

Common instances of plagiarism

Inexperienced authors are often blamed for such misconduct, involving unattributed copying of text passages, scientific facts, and others’ ideas. Properly editing and referencing such manuscripts prior to journal submission and correcting erroneous articles by publishing apologies to readers could be sufficient in cases of unintentional plagiarism [ 22 ].

Experts distinguish plagiarism of ideas, words (texts), and images (graphics) [ 3 ]. Ideas can be stolen by unethical evaluators of grant projects, journal manuscripts, or other scholarly materials during the peer review, which is intentionally delayed to allow the plagiarist to publish his/her own article with misappropriated ideas first. Misappropriation of ideas and methodologies is a more serious and inconspicuous misconduct than copying of words [ 23 ].

Textual plagiarism manifests in various forms which can be detected by advanced search engines and software that analyze similarities across a sizeable amount of digitized publications. Direct, or word-for-word, and translational forms of plagiarism are relatively easy to detect by employing search engines and anti-plagiarism software [ 24 , 25 ]. Paraphrasing and patchwork plagiarism may confuse plagiarism detection systems by plagiarists’ attempts to replace a few words in the original text and misappropriate phrases and sentences. Careful manual checks and analyses of keywords and references may help to correctly interpret the similarity reports generated by software.

Plagiarists may intentionally increase the list of references by citing non-existent sources or incorrectly cite primary sources taken from secondary ones (systematic reviews) with the sole aim of misleading readers and concealing plagiarism of secondary publications [ 20 ]. A form of manipulation (“Trojan citation”) is also reported in connection with referring to relevant items to cover up substantive plagiarism and confuse journal editors and anti-plagiarism software [ 26 ].

Current anti-plagiarism software may detect unacknowledged recycled (self-plagiarized) texts, the so-called salami (data stemming from a single study spread across several papers) and augmented (opposite to salami) texts. Accusations of plagiarism in such cases require thorough manual checks of all similar parts, particularly by experts in the professional field.

Detecting identical abstracts requires special consideration due to the similarities of some full texts with congress abstracts and preprints, which are unpublished items and do not account for plagiarism. As such, authors should be advised to provide notes in their manuscripts, linking to previously posted congress abstracts and reposted preprints.

While concentrating on textual similarities, editors employing anti-plagiarism software often overlook graphical overlaps which may reveal compound forms of ethics violation and copyright infringement [ 27 , 28 ]. Thorough graphical analyses are particularly required for manuscripts with tables, figures, depiction of technological processes, and chemical formulae [ 29 ]. Questioning authors about the authenticity of all materials, requesting official reuse permissions from copyright holders, and referencing primary sources of reused or modified graphics may help to avoid unethical conduct and copyright infringement [ 30 ].

With the advent of anti-plagiarism software, some journal editors set limits of minor, moderate, and unacceptable copying and text recycling. They argue that less than 10% of verbatim copying, particularly in Methods section, could be tolerated provided there are no linguistic options to paraphrase [ 31 ]. Accordingly, 15–20% of textual overlap is judged as less tolerable and more than 30% as unacceptable. Although such a quantitative classification helps stratify anti-plagiarism measures, most experts advocate a zero tolerance policy since even a small percentage of copying may reveal complicated and concealed ethics violations [ 32 ].

Plagiarism detection

Researchers should be aware of what constitutes plagiarism and how to detect it ( Table II ). Those authors who master academic English, familiarize themselves with bibliographic searches, and advance their graphics designing skills may avoid most instances of plagiarism, duplication, and copyright infringement. Those who employ anti-plagiarism tools should combine software and human-detection options.

Strategies for plagiarism detection

Although none of the currently available anti-plagiarism systems is perfect [ 33 ], overlooking the importance of related editorial checks may affect the authenticity of scholarly publications and lead to the so-called predatory practices [ 34 , 35 ]. Generally, employing popular online platforms such as Google Scholar, Grammarly, and PlagScan makes it possible to improve the quality of references, readability, and linguistic style of scholarly manuscripts and increase their likelihood of acceptance by influential journals [ 36 ]. The role of processing manuscripts through freely available plagiarism detection tools is difficult to overestimate, since most researchers and faculty members, particularly in developing countries, lack access to proprietary software [ 37 ].

Preliminary evidence suggests that there are differences in the prevalence of textual plagiarism across academic disciplines, necessitating careful checks in science, technology, engineering, and mathematics journal submissions [ 38 ]. Additionally, in the era of digitization and open access, reviews are more likely to contain “copy-and-paste” written sections, pointing to the particular need for checks of this type of article [ 39 ].

Plagiarism detection and verification is largely based on text-matching search engines and computer software that report similarity scores. The advanced software is integrated with numerous publishers and online platforms to allow scanning of potential overlaps among countless open-access and subscription literature items [ 40 ]. Perhaps the most advanced anti-plagiarism system is iThenticate, which is employed by most established publishers to report the overall similarity score and similarity score from a single source [ 41 ]. The system offers options to filter direct quotations, bibliographies, and methodologies to minimize chances of erroneous reports [ 42 ]. High overall similarity scores (>35%) often point to plagiarism requiring outright rejection or retraction [ 43 ].

Regular iThenticate checks have made it possible to minimize, but not exclude, unethical publications [ 44 ]. The reported similarity scores should not replace editorial decisions and should be accompanied by careful reading and validation of references [ 45 ].

Compared to textual similarity detection, image plagiarism detection is a more challenging task, since it often requires both image processing and semantic mapping techniques [ 46 , 47 ]. Google Images is a widely available search engine that can be used to reveal identical or manipulated images processed by Google [ 48 ]. However, this engine fails to detect copied and modified graphical materials. Semantic analyses are particularly useful in such a scenario of image modification. In fact, processing image legends through textual similarity tests may point to misconduct with modified images.

Attempts are underway to propose an advanced system for tracking plagiarism of graphics [ 49 ]. In the meantime, journal editors with a special interest in publishing graphics need to instruct their authors on what constitutes image plagiarism and how to ethically reuse related contents [ 50 ].

Retractions due to plagiarism

Although retractions of published articles are generally not frequent, their analyses may reveal country- and discipline-related differences in editorial strategies, misconduct prevention policies, and enforced measures [ 51 , 52 ]. Examining details of retracted articles which are publicly discussed on the Retraction Watch blog may also prioritize ethics topics for postgraduate education [ 53 , 54 ].

With the widespread use of iThenticate and other plagiarism detection software, numerous related retractions have taken place over the past decade. When retraction notices in PubMed are compared, similar percentages of plagiarism (about 20%) were mentioned in 2008 and 2016 samples [ 55 ]. The number of retractions due to plagiarism varies across countries and academic disciplines, with the U.S., China, Germany, Japan and the U.K. accounting for 3 out of 4 retractions in a sample of 130 surgery articles [ 51 ]. The same study estimated a plagiarism rate of 16% in these articles. Also, an analysis of 176 retractions in obstetrics and gynecology indicated 40 cases of plagiarism (23%) [ 56 ]. In rehabilitation and sport sciences, retractions due to plagiarism were reported in 11 (26%) and 7 (13%) cases, respectively [ 57 ]. And finally, an analysis of 22 rheumatology retractions revealed 7 (32%) cases of plagiarism in review articles [ 58 ].

Conclusions

Plagiarism continues to affect the integrity of scholarly publications worldwide. Digitization and open access provide numerous opportunities for accessing and disseminating scientific information. However, some researchers and authors are tempted to intentionally or unintentionally embark on shortcuts and construct their articles with copied and unattributed texts, graphics, and ideas. Arguably, educating authors how to systematically access and process literature and how to master academic English may prevent most instances of modern-day plagiarism. Systematic searches are necessary for choosing new topics and avoiding redundancies. Processing retrieved articles, appropriately referring to published scientific facts, and writing in one’s own words may further improve the ethical standing of new manuscripts.

Researchers and research managers alike need to learn more about globally acceptable writing practices, regularly analyze retractions due to plagiarism, and avoid related errors in their practice. Knowledge of global editorial guidance and plagiarism detection and prevention strategies is essential for successful writing and targeting influential ethical journals. Journal editors should enforce a “trust, but verify” policy by performing plagiarism checks, inquiring about authors’ writing practices, and asking for disclaimers if suspicion of plagiarism persists.

The authors declare no conflict of interest.

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Check for unintentional plagiarism

Easily check your paper for missing citations and accidental plagiarism with the EasyBib plagiarism checker. The EasyBib plagiarism checker:

• Scans your paper against billions of sources.
• Identifies text that may be flagged for plagiarism.
• Provides you with a plagiarism score.

You can submit your paper at any hour of the day and quickly receive a plagiarism report.

What is the EasyBib plagiarism checker? 

Most basic plagiarism checkers review your work and calculate a percentage, meaning how much of your writing is indicative of original work. But, the EasyBib plagiarism checker goes way beyond a simple percentage. Any text that could be categorized as potential plagiarism is highlighted, allowing you time to review each warning and determine how to adjust it or how to cite it correctly.

You’ll even see the sources against which your writing is compared and the actual word for word breakdown. If you determine that a warning is unnecessary, you can waive the plagiarism check suggestion.

Plagiarism is unethical because it doesn’t credit those who created the original work; it violates intellectual property and serves to benefit the perpetrator. It is a severe enough academic offense, that many faculty members use their own plagiarism checking tool for their students’ work. With the EasyBib Plagiarism checker, you can stay one step ahead of your professors and catch citation mistakes and accidental plagiarism before you submit your work for grading.

Why use a plagiarism checker? 

Imagine – it’s finals week and the final research paper of the semester is due in two days. You, being quite familiar with this high-stakes situation, hit the books, and pull together a ten-page, last-minute masterpiece using articles and materials from dozens of different sources.

However, in those late, coffee-fueled hours, are you fully confident that you correctly cited all the different sources you used? Are you sure you didn’t accidentally forget any? Are you confident that your teacher’s plagiarism tool will give your paper a 0% plagiarism score?

That’s where the EasyBib plagiarism checker comes in to save the day. One quick check can help you address all the above questions and put your mind at ease.

What exactly is plagiarism? 

Plagiarism has a number of possible definitions; it involves more than just copying someone else’s work. Improper citing, patchworking, and paraphrasing could all lead to plagiarism in one of your college assignments. Below are some common examples of accidental plagiarism that commonly occur.

Quoting or paraphrasing without citations

Not including in-text citations is another common type of accidental plagiarism. Quoting is taking verbatim text from a source. Paraphrasing is when you’re using another source to take the same idea but put it in your own words. In both cases, it’s important to always cite where those ideas are coming from. The EasyBib plagiarism checker can help alert you to when you need to accurately cite the sources you used.

Patchwork plagiarism

When writing a paper, you’re often sifting through multiple sources and tabs from different search engines. It’s easy to accidentally string together pieces of sentences and phrases into your own paragraphs. You may change a few words here and there, but it’s similar to the original text. Even though it’s accidental, it is still considered plagiarism. It’s important to clearly state when you’re using someone else’s words and work.

Improper citations

Depending on the class, professor, subject, or teacher, there are multiple correct citation styles and preferences. Some examples of common style guides that are followed for citations include MLA, APA, and Chicago style. When citing resources, it’s important to cite them accurately. Incorrect citations could make it impossible for a reader to track down a source and it’s considered plagiarism. There are EasyBib citation tools to help you do this.

Don’t fall victim to plagiarism pitfalls. Most of the time, you don’t even mean to commit plagiarism; rather, you’ve read so many sources from different search engines that it gets difficult to determine an original thought or well-stated fact versus someone else’s work. Or worse, you assume a statement is common knowledge, when in fact, it should be attributed to another author.

When in doubt, cite your source!

Time for a quick plagiarism quiz! 

Which of the following requires a citation?

• A chart or graph from another source
• A paraphrase of an original source
• Several sources’ ideas summarized into your own paragraph
• A direct quote
• All of the above

If you guessed option E than you’d be correct. Correct punctuation and citation of another individual’s ideas, quotes, and graphics are a pillar of good academic writing.

What if you copy your own previous writing?

Resubmitting your own original work for another class’s assignment is a form of self-plagiarism, so don’t cut corners in your writing. Draft an original piece for each class or ask your professor if you can incorporate your previous research.

What features are available with the EasyBib plagiarism checker? 

Along with providing warnings and sources for possible plagiarism, the EasyBib  plagiarism checker works alongside the other EasyBib tools, including a grammar checker  and a spell checker . You’ll receive personalized feedback on your thesis and writing structure too!

The  plagiarism checker compares your writing sample with billions of available sources online so that it detects plagiarism at every level. You’ll be notified of which phrases are too similar to current research and literature, prompting a possible rewrite or additional citation. You’ll also get feedback on your paper’s inconsistencies, such as changes in text, formatting, or style. These small details could suggest possible plagiarism within your assignment.

And speaking of citations, there are also  EasyBib citation tools  available. They help you quickly build your bibliography and avoid accidental plagiarism. Make sure you know which citation format your professor prefers!

Great! How do I start? 

Simply copy and paste or upload your essay into the checker at the top of this page. You’ll receive the first five grammar suggestions for free! To try the plagiarism checker for free, start your EasyBib Plus three-day free trial.* If you love the product and decide to opt for premium services, you’ll have access to unlimited writing suggestions and personalized feedback.

The EasyBib plagiarism checker is conveniently available 24 hours a day and seven days a week. You can cancel anytime.  Check your paper for free today!.

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Visit www.easybib.com for more information on helpful EasyBib writing and citing tools.

For informational guides and on writing and citing, visit the EasyBib guides homepage .

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Home » References in Research – Types, Examples and Writing Guide

References in Research – Types, Examples and Writing Guide

Table of Contents

References in Research

Definition:

References in research are a list of sources that a researcher has consulted or cited while conducting their study. They are an essential component of any academic work, including research papers, theses, dissertations, and other scholarly publications.

Types of References

There are several types of references used in research, and the type of reference depends on the source of information being cited. The most common types of references include:

References to books typically include the author’s name, title of the book, publisher, publication date, and place of publication.

Example: Smith, J. (2018). The Art of Writing. Penguin Books.

Journal Articles

References to journal articles usually include the author’s name, title of the article, name of the journal, volume and issue number, page numbers, and publication date.

Example: Johnson, T. (2021). The Impact of Social Media on Mental Health. Journal of Psychology, 32(4), 87-94.

Web sources

References to web sources should include the author or organization responsible for the content, the title of the page, the URL, and the date accessed.

Example: World Health Organization. (2020). Coronavirus disease (COVID-19) advice for the public. Retrieved from https://www.who.int/emergencies/disease/novel-coronavirus-2019/advice-for-public

Conference Proceedings

References to conference proceedings should include the author’s name, title of the paper, name of the conference, location of the conference, date of the conference, and page numbers.

Example: Chen, S., & Li, J. (2019). The Future of AI in Education. Proceedings of the International Conference on Educational Technology, Beijing, China, July 15-17, pp. 67-78.

References to reports typically include the author or organization responsible for the report, title of the report, publication date, and publisher.

Example: United Nations. (2020). The Sustainable Development Goals Report. United Nations.

Formats of References

Some common Formates of References with their examples are as follows:

APA (American Psychological Association) Style

The APA (American Psychological Association) Style has specific guidelines for formatting references used in academic papers, articles, and books. Here are the different reference formats in APA style with examples:

Author, A. A. (Year of publication). Title of book. Publisher.

Example : Smith, J. K. (2005). The psychology of social interaction. Wiley-Blackwell.

Journal Article

Author, A. A., Author, B. B., & Author, C. C. (Year of publication). Title of article. Title of Journal, volume number(issue number), page numbers.

Example : Brown, L. M., Keating, J. G., & Jones, S. M. (2012). The role of social support in coping with stress among African American adolescents. Journal of Research on Adolescence, 22(1), 218-233.

Author, A. A. (Year of publication or last update). Title of page. Website name. URL.

Example : Centers for Disease Control and Prevention. (2020, December 11). COVID-19: How to protect yourself and others. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html

Magazine article

Author, A. A. (Year, Month Day of publication). Title of article. Title of Magazine, volume number(issue number), page numbers.

Example : Smith, M. (2019, March 11). The power of positive thinking. Psychology Today, 52(3), 60-65.

Newspaper article:

Author, A. A. (Year, Month Day of publication). Title of article. Title of Newspaper, page numbers.

Example: Johnson, B. (2021, February 15). New study shows benefits of exercise on mental health. The New York Times, A8.

Edited book

Editor, E. E. (Ed.). (Year of publication). Title of book. Publisher.

Example : Thompson, J. P. (Ed.). (2014). Social work in the 21st century. Sage Publications.

Chapter in an edited book:

Author, A. A. (Year of publication). Title of chapter. In E. E. Editor (Ed.), Title of book (pp. page numbers). Publisher.

Example : Johnson, K. S. (2018). The future of social work: Challenges and opportunities. In J. P. Thompson (Ed.), Social work in the 21st century (pp. 105-118). Sage Publications.

MLA (Modern Language Association) Style

The MLA (Modern Language Association) Style is a widely used style for writing academic papers and essays in the humanities. Here are the different reference formats in MLA style:

Author’s Last name, First name. Title of Book. Publisher, Publication year.

Example : Smith, John. The Psychology of Social Interaction. Wiley-Blackwell, 2005.

Journal article

Author’s Last name, First name. “Title of Article.” Title of Journal, volume number, issue number, Publication year, page numbers.

Example : Brown, Laura M., et al. “The Role of Social Support in Coping with Stress among African American Adolescents.” Journal of Research on Adolescence, vol. 22, no. 1, 2012, pp. 218-233.

Author’s Last name, First name. “Title of Webpage.” Website Name, Publication date, URL.

Example : Centers for Disease Control and Prevention. “COVID-19: How to Protect Yourself and Others.” CDC, 11 Dec. 2020, https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html.

Author’s Last name, First name. “Title of Article.” Title of Magazine, Publication date, page numbers.

Example : Smith, Mary. “The Power of Positive Thinking.” Psychology Today, Mar. 2019, pp. 60-65.

Newspaper article

Author’s Last name, First name. “Title of Article.” Title of Newspaper, Publication date, page numbers.

Example : Johnson, Bob. “New Study Shows Benefits of Exercise on Mental Health.” The New York Times, 15 Feb. 2021, p. A8.

Editor’s Last name, First name, editor. Title of Book. Publisher, Publication year.

Example : Thompson, John P., editor. Social Work in the 21st Century. Sage Publications, 2014.

Chapter in an edited book

Author’s Last name, First name. “Title of Chapter.” Title of Book, edited by Editor’s First Name Last name, Publisher, Publication year, page numbers.

Example : Johnson, Karen S. “The Future of Social Work: Challenges and Opportunities.” Social Work in the 21st Century, edited by John P. Thompson, Sage Publications, 2014, pp. 105-118.

Chicago Manual of Style

The Chicago Manual of Style is a widely used style for writing academic papers, dissertations, and books in the humanities and social sciences. Here are the different reference formats in Chicago style:

Example : Smith, John K. The Psychology of Social Interaction. Wiley-Blackwell, 2005.

Author’s Last name, First name. “Title of Article.” Title of Journal volume number, no. issue number (Publication year): page numbers.

Example : Brown, Laura M., John G. Keating, and Sarah M. Jones. “The Role of Social Support in Coping with Stress among African American Adolescents.” Journal of Research on Adolescence 22, no. 1 (2012): 218-233.

Author’s Last name, First name. “Title of Webpage.” Website Name. Publication date. URL.

Example : Centers for Disease Control and Prevention. “COVID-19: How to Protect Yourself and Others.” CDC. December 11, 2020. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html.

Author’s Last name, First name. “Title of Article.” Title of Magazine, Publication date.

Example : Smith, Mary. “The Power of Positive Thinking.” Psychology Today, March 2019.

Author’s Last name, First name. “Title of Article.” Title of Newspaper, Publication date.

Example : Johnson, Bob. “New Study Shows Benefits of Exercise on Mental Health.” The New York Times, February 15, 2021.

Example : Thompson, John P., ed. Social Work in the 21st Century. Sage Publications, 2014.

Author’s Last name, First name. “Title of Chapter.” In Title of Book, edited by Editor’s First Name Last Name, page numbers. Publisher, Publication year.

Example : Johnson, Karen S. “The Future of Social Work: Challenges and Opportunities.” In Social Work in the 21st Century, edited by John P. Thompson, 105-118. Sage Publications, 2014.

Harvard Style

The Harvard Style, also known as the Author-Date System, is a widely used style for writing academic papers and essays in the social sciences. Here are the different reference formats in Harvard Style:

Author’s Last name, First name. Year of publication. Title of Book. Place of publication: Publisher.

Example : Smith, John. 2005. The Psychology of Social Interaction. Oxford: Wiley-Blackwell.

Author’s Last name, First name. Year of publication. “Title of Article.” Title of Journal volume number (issue number): page numbers.

Example: Brown, Laura M., John G. Keating, and Sarah M. Jones. 2012. “The Role of Social Support in Coping with Stress among African American Adolescents.” Journal of Research on Adolescence 22 (1): 218-233.

Author’s Last name, First name. Year of publication. “Title of Webpage.” Website Name. URL. Accessed date.

Example : Centers for Disease Control and Prevention. 2020. “COVID-19: How to Protect Yourself and Others.” CDC. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html. Accessed April 1, 2023.

Author’s Last name, First name. Year of publication. “Title of Article.” Title of Magazine, month and date of publication.

Example : Smith, Mary. 2019. “The Power of Positive Thinking.” Psychology Today, March 2019.

Author’s Last name, First name. Year of publication. “Title of Article.” Title of Newspaper, month and date of publication.

Example : Johnson, Bob. 2021. “New Study Shows Benefits of Exercise on Mental Health.” The New York Times, February 15, 2021.

Editor’s Last name, First name, ed. Year of publication. Title of Book. Place of publication: Publisher.

Example : Thompson, John P., ed. 2014. Social Work in the 21st Century. Thousand Oaks, CA: Sage Publications.

Author’s Last name, First name. Year of publication. “Title of Chapter.” In Title of Book, edited by Editor’s First Name Last Name, page numbers. Place of publication: Publisher.

Example : Johnson, Karen S. 2014. “The Future of Social Work: Challenges and Opportunities.” In Social Work in the 21st Century, edited by John P. Thompson, 105-118. Thousand Oaks, CA: Sage Publications.

Vancouver Style

The Vancouver Style, also known as the Uniform Requirements for Manuscripts Submitted to Biomedical Journals, is a widely used style for writing academic papers in the biomedical sciences. Here are the different reference formats in Vancouver Style:

Author’s Last name, First name. Title of Book. Edition number. Place of publication: Publisher; Year of publication.

Example : Smith, John K. The Psychology of Social Interaction. 2nd ed. Oxford: Wiley-Blackwell; 2005.

Author’s Last name, First name. Title of Article. Abbreviated Journal Title. Year of publication; volume number(issue number):page numbers.

Example : Brown LM, Keating JG, Jones SM. The Role of Social Support in Coping with Stress among African American Adolescents. J Res Adolesc. 2012;22(1):218-233.

Author’s Last name, First name. Title of Webpage. Website Name [Internet]. Publication date. [cited date]. Available from: URL.

Example : Centers for Disease Control and Prevention. COVID-19: How to Protect Yourself and Others [Internet]. 2020 Dec 11. [cited 2023 Apr 1]. Available from: https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html.

Author’s Last name, First name. Title of Article. Title of Magazine. Year of publication; month and day of publication:page numbers.

Example : Smith M. The Power of Positive Thinking. Psychology Today. 2019 Mar 1:32-35.

Author’s Last name, First name. Title of Article. Title of Newspaper. Year of publication; month and day of publication:page numbers.

Example : Johnson B. New Study Shows Benefits of Exercise on Mental Health. The New York Times. 2021 Feb 15:A4.

Editor’s Last name, First name, editor. Title of Book. Edition number. Place of publication: Publisher; Year of publication.

Example: Thompson JP, editor. Social Work in the 21st Century. 1st ed. Thousand Oaks, CA: Sage Publications; 2014.

Author’s Last name, First name. Title of Chapter. In: Editor’s Last name, First name, editor. Title of Book. Edition number. Place of publication: Publisher; Year of publication. page numbers.

Example : Johnson KS. The Future of Social Work: Challenges and Opportunities. In: Thompson JP, editor. Social Work in the 21st Century. 1st ed. Thousand Oaks, CA: Sage Publications; 2014. p. 105-118.

Turabian Style

Turabian style is a variation of the Chicago style used in academic writing, particularly in the fields of history and humanities. Here are the different reference formats in Turabian style:

Author’s Last name, First name. Title of Book. Place of publication: Publisher, Year of publication.

Example : Smith, John K. The Psychology of Social Interaction. Oxford: Wiley-Blackwell, 2005.

Author’s Last name, First name. “Title of Article.” Title of Journal volume number, no. issue number (Year of publication): page numbers.

Example : Brown, LM, Keating, JG, Jones, SM. “The Role of Social Support in Coping with Stress among African American Adolescents.” J Res Adolesc 22, no. 1 (2012): 218-233.

Author’s Last name, First name. “Title of Webpage.” Name of Website. Publication date. Accessed date. URL.

Example : Centers for Disease Control and Prevention. “COVID-19: How to Protect Yourself and Others.” CDC. December 11, 2020. Accessed April 1, 2023. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html.

Author’s Last name, First name. “Title of Article.” Title of Magazine, Month Day, Year of publication, page numbers.

Example : Smith, M. “The Power of Positive Thinking.” Psychology Today, March 1, 2019, 32-35.

Author’s Last name, First name. “Title of Article.” Title of Newspaper, Month Day, Year of publication.

Example : Johnson, B. “New Study Shows Benefits of Exercise on Mental Health.” The New York Times, February 15, 2021.

Editor’s Last name, First name, ed. Title of Book. Place of publication: Publisher, Year of publication.

Example : Thompson, JP, ed. Social Work in the 21st Century. Thousand Oaks, CA: Sage Publications, 2014.

Author’s Last name, First name. “Title of Chapter.” In Title of Book, edited by Editor’s Last name, First name, page numbers. Place of publication: Publisher, Year of publication.

Example : Johnson, KS. “The Future of Social Work: Challenges and Opportunities.” In Social Work in the 21st Century, edited by Thompson, JP, 105-118. Thousand Oaks, CA: Sage Publications, 2014.

IEEE (Institute of Electrical and Electronics Engineers) Style

IEEE (Institute of Electrical and Electronics Engineers) style is commonly used in engineering, computer science, and other technical fields. Here are the different reference formats in IEEE style:

Author’s Last name, First name. Book Title. Place of Publication: Publisher, Year of publication.

Example : Oppenheim, A. V., & Schafer, R. W. Discrete-Time Signal Processing. Upper Saddle River, NJ: Prentice Hall, 2010.

Author’s Last name, First name. “Title of Article.” Abbreviated Journal Title, vol. number, no. issue number, pp. page numbers, Month year of publication.

Example: Shannon, C. E. “A Mathematical Theory of Communication.” Bell System Technical Journal, vol. 27, no. 3, pp. 379-423, July 1948.

Conference paper

Author’s Last name, First name. “Title of Paper.” In Title of Conference Proceedings, Place of Conference, Date of Conference, pp. page numbers, Year of publication.

Example: Gupta, S., & Kumar, P. “An Improved System of Linear Discriminant Analysis for Face Recognition.” In Proceedings of the 2011 International Conference on Computer Science and Network Technology, Harbin, China, Dec. 2011, pp. 144-147.

Author’s Last name, First name. “Title of Webpage.” Name of Website. Date of publication or last update. Accessed date. URL.

Example : National Aeronautics and Space Administration. “Apollo 11.” NASA. July 20, 1969. Accessed April 1, 2023. https://www.nasa.gov/mission_pages/apollo/apollo11.html.

Technical report

Author’s Last name, First name. “Title of Report.” Name of Institution or Organization, Report number, Year of publication.

Example : Smith, J. R. “Development of a New Solar Panel Technology.” National Renewable Energy Laboratory, NREL/TP-6A20-51645, 2011.

Author’s Last name, First name. “Title of Patent.” Patent number, Issue date.

Example : Suzuki, H. “Method of Producing Carbon Nanotubes.” US Patent 7,151,019, December 19, 2006.

Standard Title. Standard number, Publication date.

Example : IEEE Standard for Floating-Point Arithmetic. IEEE Std 754-2008, August 29, 2008

ACS (American Chemical Society) Style

ACS (American Chemical Society) style is commonly used in chemistry and related fields. Here are the different reference formats in ACS style:

Author’s Last name, First name; Author’s Last name, First name. Title of Article. Abbreviated Journal Title Year, Volume, Page Numbers.

Example : Wang, Y.; Zhao, X.; Cui, Y.; Ma, Y. Facile Preparation of Fe3O4/graphene Composites Using a Hydrothermal Method for High-Performance Lithium Ion Batteries. ACS Appl. Mater. Interfaces 2012, 4, 2715-2721.

Author’s Last name, First name. Book Title; Publisher: Place of Publication, Year of Publication.

Example : Carey, F. A. Organic Chemistry; McGraw-Hill: New York, 2008.

Author’s Last name, First name. Chapter Title. In Book Title; Editor’s Last name, First name, Ed.; Publisher: Place of Publication, Year of Publication; Volume number, Chapter number, Page Numbers.

Example : Grossman, R. B. Analytical Chemistry of Aerosols. In Aerosol Measurement: Principles, Techniques, and Applications; Baron, P. A.; Willeke, K., Eds.; Wiley-Interscience: New York, 2001; Chapter 10, pp 395-424.

Author’s Last name, First name. Title of Webpage. Website Name, URL (accessed date).

Example : National Institute of Standards and Technology. Atomic Spectra Database. https://www.nist.gov/pml/atomic-spectra-database (accessed April 1, 2023).

Author’s Last name, First name. Patent Number. Patent Date.

Example : Liu, Y.; Huang, H.; Chen, H.; Zhang, W. US Patent 9,999,999, December 31, 2022.

Author’s Last name, First name; Author’s Last name, First name. Title of Article. In Title of Conference Proceedings, Publisher: Place of Publication, Year of Publication; Volume Number, Page Numbers.

Example : Jia, H.; Xu, S.; Wu, Y.; Wu, Z.; Tang, Y.; Huang, X. Fast Adsorption of Organic Pollutants by Graphene Oxide. In Proceedings of the 15th International Conference on Environmental Science and Technology, American Chemical Society: Washington, DC, 2017; Volume 1, pp 223-228.

AMA (American Medical Association) Style

AMA (American Medical Association) style is commonly used in medical and scientific fields. Here are the different reference formats in AMA style:

Author’s Last name, First name. Article Title. Journal Abbreviation. Year; Volume(Issue):Page Numbers.

Example : Jones, R. A.; Smith, B. C. The Role of Vitamin D in Maintaining Bone Health. JAMA. 2019;321(17):1765-1773.

Author’s Last name, First name. Book Title. Edition number. Place of Publication: Publisher; Year.

Example : Guyton, A. C.; Hall, J. E. Textbook of Medical Physiology. 13th ed. Philadelphia, PA: Saunders; 2015.

Author’s Last name, First name. Chapter Title. In: Editor’s Last name, First name, ed. Book Title. Edition number. Place of Publication: Publisher; Year: Page Numbers.

Example: Rajakumar, K. Vitamin D and Bone Health. In: Holick, M. F., ed. Vitamin D: Physiology, Molecular Biology, and Clinical Applications. 2nd ed. New York, NY: Springer; 2010:211-222.

Author’s Last name, First name. Webpage Title. Website Name. URL. Published date. Updated date. Accessed date.

Example : National Cancer Institute. Breast Cancer Prevention (PDQ®)–Patient Version. National Cancer Institute. https://www.cancer.gov/types/breast/patient/breast-prevention-pdq. Published October 11, 2022. Accessed April 1, 2023.

Author’s Last name, First name. Conference presentation title. In: Conference Title; Conference Date; Place of Conference.

Example : Smith, J. R. Vitamin D and Bone Health: A Meta-Analysis. In: Proceedings of the Annual Meeting of the American Society for Bone and Mineral Research; September 20-23, 2022; San Diego, CA.

Thesis or dissertation

Author’s Last name, First name. Title of Thesis or Dissertation. Degree level [Doctoral dissertation or Master’s thesis]. University Name; Year.

Example : Wilson, S. A. The Effects of Vitamin D Supplementation on Bone Health in Postmenopausal Women [Doctoral dissertation]. University of California, Los Angeles; 2018.

ASCE (American Society of Civil Engineers) Style

The ASCE (American Society of Civil Engineers) style is commonly used in civil engineering fields. Here are the different reference formats in ASCE style:

Author’s Last name, First name. “Article Title.” Journal Title, volume number, issue number (year): page numbers. DOI or URL (if available).

Example : Smith, J. R. “Evaluation of the Effectiveness of Sustainable Drainage Systems in Urban Areas.” Journal of Environmental Engineering, vol. 146, no. 3 (2020): 04020010. https://doi.org/10.1061/(ASCE)EE.1943-7870.0001668.

Example : McCuen, R. H. Hydrologic Analysis and Design. 4th ed. Upper Saddle River, NJ: Pearson Education; 2013.

Author’s Last name, First name. “Chapter Title.” In: Editor’s Last name, First name, ed. Book Title. Edition number. Place of Publication: Publisher; Year: page numbers.

Example : Maidment, D. R. “Floodplain Management in the United States.” In: Shroder, J. F., ed. Treatise on Geomorphology. San Diego, CA: Academic Press; 2013: 447-460.

Author’s Last name, First name. “Paper Title.” In: Conference Title; Conference Date; Location. Place of Publication: Publisher; Year: page numbers.

Example: Smith, J. R. “Sustainable Drainage Systems for Urban Areas.” In: Proceedings of the ASCE International Conference on Sustainable Infrastructure; November 6-9, 2019; Los Angeles, CA. Reston, VA: American Society of Civil Engineers; 2019: 156-163.

Author’s Last name, First name. “Report Title.” Report number. Place of Publication: Publisher; Year.

Example : U.S. Army Corps of Engineers. “Hurricane Sandy Coastal Risk Reduction Program, New York and New Jersey.” Report No. P-15-001. Washington, DC: U.S. Army Corps of Engineers; 2015.

CSE (Council of Science Editors) Style

The CSE (Council of Science Editors) style is commonly used in the scientific and medical fields. Here are the different reference formats in CSE style:

Author’s Last name, First Initial. Middle Initial. “Article Title.” Journal Title. Year;Volume(Issue):Page numbers.

Example : Smith, J.R. “Evaluation of the Effectiveness of Sustainable Drainage Systems in Urban Areas.” Journal of Environmental Engineering. 2020;146(3):04020010.

Author’s Last name, First Initial. Middle Initial. Book Title. Edition number. Place of Publication: Publisher; Year.

Author’s Last name, First Initial. Middle Initial. “Chapter Title.” In: Editor’s Last name, First Initial. Middle Initial., ed. Book Title. Edition number. Place of Publication: Publisher; Year:Page numbers.

Author’s Last name, First Initial. Middle Initial. “Paper Title.” In: Conference Title; Conference Date; Location. Place of Publication: Publisher; Year.

Example : Smith, J.R. “Sustainable Drainage Systems for Urban Areas.” In: Proceedings of the ASCE International Conference on Sustainable Infrastructure; November 6-9, 2019; Los Angeles, CA. Reston, VA: American Society of Civil Engineers; 2019.

Author’s Last name, First Initial. Middle Initial. “Report Title.” Report number. Place of Publication: Publisher; Year.

Bluebook Style

The Bluebook style is commonly used in the legal field for citing legal documents and sources. Here are the different reference formats in Bluebook style:

Case citation

Case name, volume source page (Court year).

Example : Brown v. Board of Education, 347 U.S. 483 (1954).

Statute citation

Name of Act, volume source § section number (year).

Example : Clean Air Act, 42 U.S.C. § 7401 (1963).

Regulation citation

Name of regulation, volume source § section number (year).

Example: Clean Air Act, 40 C.F.R. § 52.01 (2019).

Book citation

Author’s Last name, First Initial. Middle Initial. Book Title. Edition number (if applicable). Place of Publication: Publisher; Year.

Example: Smith, J.R. Legal Writing and Analysis. 3rd ed. New York, NY: Aspen Publishers; 2015.

Journal article citation

Author’s Last name, First Initial. Middle Initial. “Article Title.” Journal Title. Volume number (year): first page-last page.

Example: Garcia, C. “The Right to Counsel: An International Comparison.” International Journal of Legal Information. 43 (2015): 63-94.

Website citation

Author’s Last name, First Initial. Middle Initial. “Page Title.” Website Title. URL (accessed month day, year).

Example : United Nations. “Universal Declaration of Human Rights.” United Nations. https://www.un.org/en/universal-declaration-human-rights/ (accessed January 3, 2023).

Oxford Style

The Oxford style, also known as the Oxford referencing system or the documentary-note citation system, is commonly used in the humanities, including literature, history, and philosophy. Here are the different reference formats in Oxford style:

Author’s Last name, First name. Book Title. Place of Publication: Publisher, Year of Publication.

Example : Smith, John. The Art of Writing. New York: Penguin, 2020.

Author’s Last name, First name. “Article Title.” Journal Title volume, no. issue (year): page range.

Example: Garcia, Carlos. “The Role of Ethics in Philosophy.” Philosophy Today 67, no. 3 (2019): 53-68.

Chapter in an edited book citation

Author’s Last name, First name. “Chapter Title.” In Book Title, edited by Editor’s Name, page range. Place of Publication: Publisher, Year of Publication.

Example : Lee, Mary. “Feminism in the 21st Century.” In The Oxford Handbook of Feminism, edited by Jane Smith, 51-69. Oxford: Oxford University Press, 2018.

Author’s Last name, First name. “Page Title.” Website Title. URL (accessed day month year).

Example : Jones, David. “The Importance of Learning Languages.” Oxford Language Center. https://www.oxfordlanguagecenter.com/importance-of-learning-languages/ (accessed 3 January 2023).

Dissertation or thesis citation

Author’s Last name, First name. “Title of Dissertation/Thesis.” PhD diss., University Name, Year of Publication.

Example : Brown, Susan. “The Art of Storytelling in American Literature.” PhD diss., University of Oxford, 2020.

Newspaper article citation

Author’s Last name, First name. “Article Title.” Newspaper Title, Month Day, Year.

Example : Robinson, Andrew. “New Developments in Climate Change Research.” The Guardian, September 15, 2022.

AAA (American Anthropological Association) Style

The American Anthropological Association (AAA) style is commonly used in anthropology research papers and journals. Here are the different reference formats in AAA style:

Author’s Last name, First name. Year of Publication. Book Title. Place of Publication: Publisher.

Example : Smith, John. 2019. The Anthropology of Food. New York: Routledge.

Author’s Last name, First name. Year of Publication. “Article Title.” Journal Title volume, no. issue: page range.

Example : Garcia, Carlos. 2021. “The Role of Ethics in Anthropology.” American Anthropologist 123, no. 2: 237-251.

Author’s Last name, First name. Year of Publication. “Chapter Title.” In Book Title, edited by Editor’s Name, page range. Place of Publication: Publisher.

Example: Lee, Mary. 2018. “Feminism in Anthropology.” In The Oxford Handbook of Feminism, edited by Jane Smith, 51-69. Oxford: Oxford University Press.

Author’s Last name, First name. Year of Publication. “Page Title.” Website Title. URL (accessed day month year).

Example : Jones, David. 2020. “The Importance of Learning Languages.” Oxford Language Center. https://www.oxfordlanguagecenter.com/importance-of-learning-languages/ (accessed January 3, 2023).

Author’s Last name, First name. Year of Publication. “Title of Dissertation/Thesis.” PhD diss., University Name.

Example : Brown, Susan. 2022. “The Art of Storytelling in Anthropology.” PhD diss., University of California, Berkeley.

Author’s Last name, First name. Year of Publication. “Article Title.” Newspaper Title, Month Day.

Example : Robinson, Andrew. 2021. “New Developments in Anthropology Research.” The Guardian, September 15.

AIP (American Institute of Physics) Style

The American Institute of Physics (AIP) style is commonly used in physics research papers and journals. Here are the different reference formats in AIP style:

Example : Johnson, S. D. 2021. “Quantum Computing and Information.” Journal of Applied Physics 129, no. 4: 043102.

Example : Feynman, Richard. 2018. The Feynman Lectures on Physics. New York: Basic Books.

Example : Jones, David. 2020. “The Future of Quantum Computing.” In The Handbook of Physics, edited by John Smith, 125-136. Oxford: Oxford University Press.

Conference proceedings citation

Author’s Last name, First name. Year of Publication. “Title of Paper.” Proceedings of Conference Name, date and location: page range. Place of Publication: Publisher.

Example : Chen, Wei. 2019. “The Applications of Nanotechnology in Solar Cells.” Proceedings of the 8th International Conference on Nanotechnology, July 15-17, Tokyo, Japan: 224-229. New York: AIP Publishing.

Example : American Institute of Physics. 2022. “About AIP Publishing.” AIP Publishing. https://publishing.aip.org/about-aip-publishing/ (accessed January 3, 2023).

Patent citation

Author’s Last name, First name. Year of Publication. Patent Number.

Example : Smith, John. 2018. US Patent 9,873,644.

References Writing Guide

Here are some general guidelines for writing references:

• Follow the citation style guidelines: Different disciplines and journals may require different citation styles (e.g., APA, MLA, Chicago). It is important to follow the specific guidelines for the citation style required.
• Include all necessary information : Each citation should include enough information for readers to locate the source. For example, a journal article citation should include the author(s), title of the article, journal title, volume number, issue number, page numbers, and publication year.
• Use proper formatting: Citation styles typically have specific formatting requirements for different types of sources. Make sure to follow the proper formatting for each citation.
• Order citations alphabetically: If listing multiple sources, they should be listed alphabetically by the author’s last name.
• Be consistent: Use the same citation style throughout the entire paper or project.
• Check for accuracy: Double-check all citations to ensure accuracy, including correct spelling of author names and publication information.
• Use reputable sources: When selecting sources to cite, choose reputable and authoritative sources. Avoid sources that are biased or unreliable.
• Include all sources: Make sure to include all sources used in the research, including those that were not directly quoted but still informed the work.
• Use online tools : There are online tools available (e.g., citation generators) that can help with formatting and organizing references.

Purpose of References in Research

References in research serve several purposes:

• To give credit to the original authors or sources of information used in the research. It is important to acknowledge the work of others and avoid plagiarism.
• To provide evidence for the claims made in the research. References can support the arguments, hypotheses, or conclusions presented in the research by citing relevant studies, data, or theories.
• To allow readers to find and verify the sources used in the research. References provide the necessary information for readers to locate and access the sources cited in the research, which allows them to evaluate the quality and reliability of the information presented.
• To situate the research within the broader context of the field. References can show how the research builds on or contributes to the existing body of knowledge, and can help readers to identify gaps in the literature that the research seeks to address.

Importance of References in Research

References play an important role in research for several reasons:

• Credibility : By citing authoritative sources, references lend credibility to the research and its claims. They provide evidence that the research is based on a sound foundation of knowledge and has been carefully researched.
• Avoidance of Plagiarism : References help researchers avoid plagiarism by giving credit to the original authors or sources of information. This is important for ethical reasons and also to avoid legal repercussions.
• Reproducibility : References allow others to reproduce the research by providing detailed information on the sources used. This is important for verification of the research and for others to build on the work.
• Context : References provide context for the research by situating it within the broader body of knowledge in the field. They help researchers to understand where their work fits in and how it builds on or contributes to existing knowledge.
• Evaluation : References provide a means for others to evaluate the research by allowing them to assess the quality and reliability of the sources used.

Advantages of References in Research

There are several advantages of including references in research:

• Acknowledgment of Sources: Including references gives credit to the authors or sources of information used in the research. This is important to acknowledge the original work and avoid plagiarism.
• Evidence and Support : References can provide evidence to support the arguments, hypotheses, or conclusions presented in the research. This can add credibility and strength to the research.
• Reproducibility : References provide the necessary information for others to reproduce the research. This is important for the verification of the research and for others to build on the work.
• Context : References can help to situate the research within the broader body of knowledge in the field. This helps researchers to understand where their work fits in and how it builds on or contributes to existing knowledge.
• Evaluation : Including references allows others to evaluate the research by providing a means to assess the quality and reliability of the sources used.
• Ongoing Conversation: References allow researchers to engage in ongoing conversations and debates within their fields. They can show how the research builds on or contributes to the existing body of knowledge.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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