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How to Write an Appendix

An appendix can be added at the end of an essay to present supplemental information that will aid the reader in understanding the material presented.


  • Step 1: Organize supplementary information Organize supplementary information for your essay, like detailed mathematical proofs, raw data, formulas, questionnaires used in research, diagrams, maps, pictures, and detailed descriptions of apparatuses used.
  • Step 2: Give it a title Title the appendix. If there is only one appendix, simply title it Appendix. For multiple appendices, title them as Appendix A, B, C, and so on.
  • TIP: Organize different types of information into separate appendices.
  • Step 3: Separate them Place each appendix on its own page.
  • Step 4: Insert the appendix Insert the appendices after the references page of the essay.
  • Step 5: Format Format the appendices in APA style: typed, double spaced, and in 12 point font. Set the margins to 1 inch. Include the page numbers on the right and title of the essay on the left. Now your essay is ready to impress your audience with your original research!
  • FACT: The Warren Commission Report on the assassination of President Kennedy has 18 appendices.

You Will Need

  • Supplementary materials
  • Word processor

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