The Publication Manual of the American Psychological Association is used in many social sciences. It provides a common structure for academic work, helping writers give proper credit to the sources they've used and assisting the reader in exploring further.
APA papers have one-inch margins and are double-spaced and left-aligned. Use an accessible font (e.g., 11-pt. Calibri or Arial, 12-pt. Times New Roman) and headings. Paragraphs are indented 0.5". Page numbers are at the top-right, and student papers don't require a running head.
One of the goals of the new edition was to make citations and formatting simpler for students and instructors. There are now distinct formatting guidelines for student papers (see template below). Other notable changes: