Footnote

1. Footnote is a short note that provides additional information relating to either content of the main text or copyright.
2. The content-related footnote serves to complement or clarify substantive information in the main text, and not to otherwise add irrelevant and unimportant information.
3. Copyright-related footnote is required when authors reproduce lengthy citations or scale items or tests in the main text.
4. Footnote also has specific styles of numbering and formatting, which can be checked in the following document:
Footnote APA 7th edition