The American Psychological Association has its own style guide for its publications. See the Concise Guide to APA Style (7th ed.), the APA's official style resource for students.
For an overview of the style and examples see the Purdue OWL (Online Writing Lab) for the APA style.
Generate APA Style citations using ZoteroBib.
Zotero is a robust tool for collecting, managing, and citing sources. It was built by George Mason University's Center for History & New Media. It is free and open source and tends to be a librarian favorite. Zotero functions as a browser plugin with a web backup. It works with Chrome, Safari, or Firefox, and integrates with Microsoft Word and Google Docs for in-text parenthetical/footnote citations.
New for Fall 2021: Tufts now subscribes to Zotero Institution, which provides all members of the community unlimited individual and group cloud storage on zotero.org. To configure, simply add and confirm your Tufts email address in your zotero.org account. Contact a Tisch Librarian with any questions.