Referencing your own appendices in your text
People often get confused about how to reference an appendix to their work, but the answer’s easy – you don’t reference the appendix itself.
All you need to do is signpost it in your text, eg (see Appendix A).
If the appendix is something you have written yourself, then you may have included references within it. If so, you just insert the citations in the text of your appendix as normal and include the full references along with all the others in your reference list.
If the appendix you have created consists entirely of text written by someone else, then put the citation at the bottom and include the full reference in your list.