APA Style is a standardized format for writing that has been established by the American Psychological Association. It is generally used by students and scholars working within a behavioral science discipline.
Keep in mind that APA Style refers to:
the format & structure of your paper.
how you cite other authors within the body of your paper.
how you compile a references page at the end of your paper.
Websites
Purdue OWL (Online Writing Center) - APA Guidelines- This site contains all the examples and formatting guidelines you find in the print manual in a browsable website put together by the Purdue Writing Lab staff.