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.


Up next in How to Write a Book (11 videos)

Who's to say the next New York Times bestselling author can't be you?

You Will Need

  • Supplementary materials
  • Word processor


  1. 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.

  2. 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.

  3. Organize different types of information into separate appendices.

  4. Step 3

    Separate them

    Place each appendix on its own page.

  5. Step 4

    Insert the appendix

    Insert the appendices after the references page of the essay.

  6. Step 5


    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!

  7. The Warren Commission Report on the assassination of President Kennedy has 18 appendices.