Purdue OWL APA StyleThis resource, revised according to the 7th edition APA Publication Manual, provides fundamental guidelines for constructing the reference pages of research papers. For more information, please consult the Publication Manual of the American Psychological Association, (7th ed.). Note: This page reflects the latest version of the APA Publication Manual (i.e., APA 7), which released in October 2019. The equivalent resource for the older APA 6 style can be found here.