Formatting Your Paper Body in APA Style. Document Format. To meet APA Style guidelines, essays and papers are typed and APA paper spacing requires double spacing. The APA format of writing came about in 1929 when a group of psychologists, anthropologists, and business men established rules to standardize scientific writing. APA. Writing a research paper in APA style is quite a task especially when the students have the additional burden of searching sources for their topics. Learn about APA and MLA Outline Format, Research Paper Outline sample, download free Outline Template. Click on the link above in the Media box to download the pdf handout, APA Sample Paper. If you are taking a psychology class, it is very likely that your instructor will ask you to write an APA paper at some point. What exactly is an APA paper? Pick sample research paper by citation style: Example of APA Format Paper; Sample MLA Research Paper; Sample Paper in Chicago Citation Style; Pick example research. The American Psychological Association (APA) Style Guide was developed for use primarily in the social sciences for both research papers and journal articles. The. APA research paper outline. Navigation menu: Why Do an Outline for Your Research Paper? APA Research Paper outline format; Four Crucial Points for an Effective APA. General format of APA citation, the most commonly used style in the sciences.