FAQ: How do I cite two resources by the same author, published in the same year in APA Style (in-text)?

When an author has published multiple sources in the same year, include a lowercase letter immediately following the date. Begin this lettering with "a" and continue in alphabetical order.

General Format

Parenthetical

(Author, Publication Datea)

(Author, Publication Dateb)

Narrative

Author (Publication Datea)

Author (Publication Dateb)

For Example

Parenthetical

(Winston, 2017a)

(Winston, 2017b)

Narrative

Winston (2017a)

Winston (2017b)

More Information

• APA Style Manual-In-text Citations This link opens in a new window (American Psychological Association)
• Academic Writer-APA In-text citation This link opens in a new window
• APA Guide - Formatting Authors in In-Text Citations This link opens in a new window (Shapiro Library)
• Citing Works With the Same Author and Date This link opens in a new window (American Psychological Association)

Disclaimer

This information is intended to be a guideline, please be sure to speak to your professor about the appropriate way to cite sources in your class assignments and projects.