Skip to main content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Citing Sources: APA Citation Style - 6th ed.

We are transitioning to APA 7th ed. Check with your professor to see which APA edition they require.

What is it?

American Psychological Association (APA) is most commonly used to write papers and cite sources within the sciences and social sciences.

**If you are not sure which citation style to use, please ask your instructor.

 The purpose of documentation is to:

  • Identify (cite) other people’s ideas and information used within your essay, assignment or paper.
  • Indicate the authors or sources of these in a References list at the end of your paper.

This guide is based on the APA Manual (6th ed.) that was published in 2009.


APA Updates: What's New in the 6th Edition?

APA recently published a new edition of their Publication Manual

Some of the changes include:

  • no longer include retrieval date unless source information may change over time
  • expanded coverage of online resources

To learn more about the changes made in the new edition, check out the "What's New" section on the official APA Website.

**The American Psychological Association has recently issued Corrections to the First Printing of the Publication Manual, Sixth Edition (July 2009).


Sections of this guide and examples have been used/adapted with the permission of Seneca College Libraries. For information, please contact Seneca college library. Note: When copying this guide, please retain this box.

APA: Top Links


Citation Basics: Using APA Style

Learn how to properly cite your sources using APA, the citation style commonly used in the sciences and social sciences.

APA: Additional Resources

The following resources provide additional information and examples that will help you to cite your sources and format your papers using APA. 


*Please remember to always defer to your instructor’s preferences regarding formatting or citation requirements.

Ask GBC Library Online

Chat now


If we are offline, please
submit your research
question here

LLC Resources