There are two types of footnotes that can be used under APA style: those that provide additional content and those that acknowledge copyright permission status. Footnotes should not be longer than one paragraph.
All footnotes should be numbered consecutively in the order in which they appear in your paper. Footnotes can either be placed on the bottom of the page in which they appear, or they can be placed in consecutive order on a separate page after the reference page. In the text of your paper, footnote numbers should be superscripted and should follow any punctuation (except a dash).
Also include a Footnotes section at the end of your paper. This section should appear after your reference page. Start the Footnotes section on its own page and center the word ‘Footnotes’ on the top of the page.