The print edition of Publication manual of the American Psychological Association: the official guide to APA style is available at Mannix Library.
The APA website includes a lot of free resources, for example:
APA Style Guide to Common Reference Examples
Creating an APA Style Reference List Guide
APA Style Reference Guide for Journal Articles, Books, and Edited Book Chapters
Tutorials and Webinars
The Library Hub also provides several options for obtaining citations in the APA style.
Books & eBook Search
Click the "Cite" button from the record you want to cite, choose APA 7th Ed. Alternatively if you are using EndNote, export the citation and load into EndNote, make sure you have set the output style to APA.
Articles & More Search
Click "Cite" from the Tools menu, scroll down the list of citation formats until you see APA.