In most cases of style, paper format, organization, and mechanics, thisstyle guide follows The format for the levels of subheadings is as follows with examples in 3) Use words for numbers beginning a sentence, title, or heading (e.g., "One....
Always use at least two subheadings or none at all. If there is just one subheading, the top-level heading is sufficient. Section labels vs headings In addition to regular headings, APA works with “section labels” for specific parts of the paper. They’re similar to headings but are form...