You can if you must but you know what I mean. Typically you cite a peer reviewed work and reference it in the bibliography with author, year, publisher, etc.

Not really. These are useful bits of bibliographic information, which can give you an idea of a source without having to consult it. And the kind of publisher gives an indication of reliability ranging from peer reviewed to self-published. Including an URL as well, when applicable, is of course very useful (given that it's a stable one).

Sure, but that's what the PDF format exists for.