For the most authoritative information on APA Style, consult the Publication Manual of the American Psychological Association, 6th Edition. Copies are readily available at the library reference desk.
You can also consult the following online resources to help with APA paper and citation format:
APA Style FAQs - Helpful answers to frequently asked questions regarding citation and paper format.
DOI and URL Flowchart - Use this online flowchart to determine when to include DOIs, URLs, or database information for your reference citations