Formal business writing generally uses the American Psychological Association (APA) Style Guide, but the Chicago Manual of Style is also used. Journals may have their own specific styles.
The OWL program at Purdue has some excellent instructional guides, among them this guide to APA explaining and showing examples for formatting a research paper and citation styles.
The online version of the classic writing style guide used primarily in the social sciences and humanities. Access is for the 17th edition (2017) and 18th edition (2024).
