APA style does not have its own rules for citing legal materials and instead it refers users to the standard legal citation style commonly used in the United States, The Bluebook.
The Canadian Guide to Uniform Legal Citation, also referred to as the McGill Guide, is the standard used most widely in Canada.
For in-depth examples on legal citations, please refer to the Legal Citations Guide. The examples given are some of the most common formatting used with APA style, and require only minor changes to the citations copied from the most frequented databases for primary legal sources: CanLII, QuickLaw and HeinOnline.