Handout covering the basics of APA style - 7th Edition.
PPT (updated for 7th Edition), including potentially tricky examples such as book chapters and secondary citations.
From APA, color-coded explanation of journal, book, and book chapter references (pdf).
Side by side comparison of the two editions, created by a librarian at East Carolina University.
This is a dependable site for APA questions. Look for their Sample Paper, too.
From APA: Detailed instructions and examples from the 7th edition
Provides a DOI for an article citation when one is available.
Explains when to give credit to another person for their intellectual work (and how to do it correctly). Look for the "Quoting, Paraphrasing, and Summarizing" section on the left for examples of each.