If you are adding an appendix to your paper there are a few rules to follow that comply with APA 7 guidelines:
For more information, see Jack Caulfield's excellent guide at Scribbr
Caulfield, J. (2020, November 13). How to create an APA Style appendix. Scribbr.
Your research paper ends with a list of all the sources cited in the text of the paper. Here are nine quick rules for this Reference list.