This guide was developed in part by using ChatGPT-4o, a generative AI language model. It assisted in drafting content, providing recommendations, and refining language to ensure clarity and coherence. All AI-generated text was reviewed and edited for accuracy and relevance to the topic.
Citing your sources isn’t just about avoiding plagiarism—it’s a key part of participating in scholarly conversations. Citation conventions help readers understand the nature of the information you’re using: whether it’s a scholarly article, a news story, a website, or another kind of source. Just as importantly, citations allow readers to trace your research path and locate the original sources for themselves. This transparency builds trust in your work and helps others explore the topic further.
Read this library guide for a more comprehensive discussion. Watch the video below to understand how to use other people's resources.
Citations typically have three key elements, each serving a different purpose in your writing:
Together, these elements make your use of sources clear, responsible, and traceable. Explore the visual example below of how these elements interrelate (the example follows APA style).
There are several citation styles, each with its own formatting rules and conventions. The most commonly used styles include APA (American Psychological Association), often used in the social sciences; MLA (Modern Language Association), common in the humanities; and Chicago, which is frequently used in history and some other disciplines.
While all citation styles aim to give credit and help readers locate sources, they differ in how they present that information. For example:
A very helpful resource is Purdue University's Online Writing Lab, which goes into great detail about these styles (and other lesser known ones). It also provides thorough examples of how each style formats citations.
A citation is more than a formatting rule—it’s a fundamental part of how knowledge is shared, understood, and built upon. When done well, a citation gives your reader useful clues about the source you’ve used:
Learning how to “read” a citation helps you evaluate sources more effectively—and learning how to write one accurately helps you participate in academic conversations responsibly.
Accurate citation isn't just about avoiding plagiarism or getting the format right—it helps keep information stable, traceable, and useful. When you cite well:
In this way, accurate citation supports not only your own work but also the wider ecosystem of research and knowledge sharing.
Explore the interactive slides below showing sample citation entries in APA, MLA, and Chicago styles.
While each style has its own way of organizing information—like using italics, punctuation, or different word orders—they all communicate the same core details: who created the source, when it was published, what it’s called, and where it was published or accessed.
You don’t need to memorize every rule or worry about perfect accuracy. Instead, focus on recognizing how small formatting choices help convey meaning—such as distinguishing the title of a source from the place it was published. As a writer and participant in scholarly conversations, becoming familiar with these conventions helps you communicate more clearly, signal the kind of information you’re working with, and build trust with your readers.