We have two SPIA Post-docs to help you with your writing, Dr. Maldonado and Dr. Rosas. They can be reached at SPIAwriting@princeton.edu
Consistent use of a citation style
If your professor doesn't have a preference, I suggest you use the Chicago Manual of Style 17th Edition for your independent work. The notes/bibliography style seems ideal. I suggest using full citations followed by shortened citations for the same sources. URLs are listed once in the notes and again in the bibliography. This style has to be added to Zotero by clicking get additional styles when specifying your Zotero preferences.