American Psychological Association (APA) style is one of several citation styles used in academic writing. The seventh edition of the Publication Manual of the American Psychological Association is a comprehensive resource, available at most UBC Libraries.
Here are a few useful resources that provide examples and should answer most of your questions about APA. Remember you can save citations from Summon in APA format too!
UBC Guide to Evaluating Sources
Questions to consider when evaluating a source: