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Citation Guide (MLA 9th Edition)

How to cite sources according to MLA

The Role of Citations

What are citations?

Citations are references within your work to the sources you used. They attribute information or ideas to their source, simultaneously giving credit to the original author and allowing readers to locate the source that the information comes from.

Why do we include citations?

  • To give due credit to others' work/writing/ideas.
  • To connect your work to the work of others, contributing to a nexus of ideas and scholarship.
  • To direct people to the information and sources you have engaged with.
  • To demonstrate that you did proper research, adding to your credibility.
  • To provide documentation for readers (and yourself) to locate the sources.
  • To avoid plagiarism!

When is a citation needed?

You need to include a citation whenever you quote, paraphrase, summarize, or otherwise refer to someone else's work. Always give credit where credit is due, even for items in the public domain (for more information on this, visit our Copyright and Fair Use guide).


About the MLA Style Citation System

The MLA citation system was created by the Modern Language Association of America (MLA). It is a set of guidelines for formatting and citing research in writing. MLA style citations include facts about the source, which are referred to as elements. The elements are arranged in a specific order depending on the type of material.

There are two components needed to properly cite sources:

  1. In-Text Citations: Brief in-text citations are incorporated into the body of your paper when you incorporate information or ideas from another source. All in-text citations must have a corresponding full citation on the Works Cited page.
  2. Works Cited Page: All sources that you use must have full citations on the Works Cited page.

MLA Style Manual:


Purdue OWL (Online Writing Lab)

OWL Purdue Online Writing Lab logo

Purdue OWL has excellent online manuals for these commonly used citation styles:

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