2. Humanities vs Social Sciences Style. The humanities favours MLA (Modern Languages Association) style. One of many good sources for this style is the University of Maryland Citing Electronic Sources page.
Being a humanities-style person, I am completely comfortable with this style in all work prepared for me. However, you should know that there is an alternate style, used in most of the social sciences, based on the APA (American Psychological Association) handbook. If you are preparing a paper for a highly formal occasion ( thesis, perhaps), make sure that you know which style is preferred, or if your supervisor is like me, just pathetically grateful for any consistent style at all.
3. Don't use footnotes. Foot and end notes are rapidly going out of style. They are especially irritating in electronic documents that have no "feet," that is, no pages for footnotes to be at the foot of, and no easy way to flip to the end to look at endnotes.
Instead, use parenthetical documentation. In the text, refer to the source by name and page number if available (line numbers or paragraph numbers are sometimes used as alternatives in electronic documents).
Some authors claim that "the internet isn't worth the powder to blow it up" (Smith 17).or
Smith claims that "the internet isn't worth the powder to blow it up" (17).If you have two pieces of work by Smith, use a shortened version of the title to distinguish between them.
End the paper with a page headed References which contains all references, both paper and electronic, in alphabetical order, using Page's suggested style to the extent that it makes sense.
When all else fails, make it up as you go along. The main thing is to be consistent and to give the reader enough information to find the source herself.