What is APA style?
APA Style® is a set of rules and guidelines that help code the many components of scientific writing in a clear, uniform way to help increase reading comprehension. You can find the entire set of APA Style® rules and guidelines in the sixth edition of the Publication Manual of the American Psychological Association. Source: APA Style Site
Who uses APA style?
A variety of disciplines utilize APA Style®, especially those within the social sciences. Be sure to check with your advisor/professor as to which writing style should be used for your specific project.