Which citation format/style for non-fiction?

[No obvious forum for this, but it is a style kind of question]

Online I see citation styles broken down and suggested in many ways, so my genre is “How To”, or reference for a job/career. I’m writing about a specific job type. But when it came to citing references, I found no consistency. It’s going to be a work a little bigger than average, and not a pamphlet.
I still have to figure out the best way to deal with references in Scrivener, but this question is solely about citation styles for non-fiction, whether inline or indicated with a number.


There are vast differences across fields, and even between journals in the same field. Get a reference specific to your topic area/publisher.