When you add appendices to your work, make sure they are clearly labelled with a letter (A) or number (1).
When you refer to the appendices in your work, you can add (see Appendix A) at the end of your sentence or Appendix A shows that...at the beginning of your sentence.
If you have included an appendix in your work and have added references within it, insert the citations in the text of your appendix as normal and include the full references in your reference list.
If the appendix you have created consists entirely of text written by someone else, then add the citation at the end of the text (as you would in your essay) and include the full reference in your list.
Referencing appendices in someone else's work
If you refer to an appendix in someone else's work, then you add this to your usual citation, as well as the page number if appropriate.
For example: ....embedded in policy and practice (McCormack and McCance, 2022, Appendix A, p.2).
The resource is referenced in the normal way in your reference list.