APA Style provides a foundation for effective scholarly communication because it helps writers present their ideas in a clear, precise, and inclusive manner. The "Publication Manual of the American Psychological Association, Seventh Edition" is the official source for APA Style.

To access the printed version of APA 7th edition, you may click here for the details and location of the manual.
To view the pdf version of University of Malaya Library APA 7th edition manual, you may click here.
Source : APA Style
Source : University Malaya Library APA 7th Edition : Formatting & Style Guide