When writing research papers in which APA format is required, you may need to affix an appendix. The appendix can include source data, charts, tables, graphs or other items of note to the reader. You must follow a few formatting rules to writing appendices in APA style.
Gather all the information you want to include in your appendix.
Type "Appendix" into a blank document on your word-processing software. If there is more than one appendix, add "A," "B," "C," and so on to each appendix in the order in which it appears. If there's only one appendix, you do not need to add a letter. Double-space after this line.
Type the title of the appendix. For example, if your paper is about the Spanish Inquisition, the title of one appendix might be "List of Spanish Monarchs in the Spanish Inquisition." Double-space after this line.
Begin each new appendix on a new page. Be sure that the appendix is in the same font as the rest of the paper.
Save the appendices in a separate word document from the rest of the paper, so you can edit the paper and the appendices separately without getting in the way of the formatting.
Put the "Appendix" sections after the "Works Cited" section in the ordering of the pages. Do this manually after the pages have been printed.