I'm asking out of curiosity but also because the history class I'm in requires me to. If I were to cite the biographies on Julius Caesar by Suetonius, what would that look like?
Depends on where you are. If you're in the US, Chicago style citation is going to probably be your go to. There's another link as well.
So, you're looking at something like this.
Ancient Author (Last Name, First Name). Title of Work.(italicized) Format. City: Publishing Company, copyright date. (if it's from the internet, you put the website link and when you accessed the page)
Hope this helps!
I use the Harvard style for my work, check with your tutor RE which style they're looking for, but it usually looks something like this;
Ancient Author's Name [translated by Boggs, J.], Work title, book 1; chapter name (if applicable), chapters; a-b, x-y, Publisher, Publishing/print location, Date published.
For your in-text citations, you should put in a near-complete reference (perhaps omitting details such as translation/publication date) the first time you cite a work, and a condensed one (author/title/book/chapter) each time thereafter.