These tips from Adler's format reviewers will help you avoid the most common APA formatting errors.
Section headings should not be labelled with letters or numbers. Level 1 headings should be centered, bold, and in title case. Level 2 headings should be flush left, bold, and in title case. Level 3 headings should be flush left, bold, in title case, and italicized.
Level 1 Heading
Text starts here.
Level 2 Heading
Text starts here.
Level 3 Heading
Text starts here.
Level 4 Heading. Text starts here.
Level 5 Heading. Text starts here.
Generally, spell out numbers less than 10 and use numerals for numbers 10 and above.
Numerals (rather than spelled-out numbers) are use for the following:
Table/Figure 1
Table/Figure Title Goes Here