APA Format is a style guide used primarily in the social sciences for writing and citing sources. It was developed by the American Psychological Association to ensure clarity and consistency in academic writing. Key elements include a title page, abstract, main body, and references, with specific guidelines for font, margins, and spacing. In APA Format, in-text citations typically include the author's last name and the year of publication, while the reference list at the end provides full details of each source. This format helps readers locate the original works and gives credit to the authors, promoting academic integrity.