To cite a book, use the following format: Author Name, Title of the Book (in Italics) (City of Publishing: Publisher, Year), pages. So for example, your footnote would look like this:
Fake Author, Fake Book Title (New York: Fake Publisher, 2011), 1-21.
To cite a journal article, use the following format: Author's Name, "Title of Article," Title of Journal (Month Year): Pages. If done properly, your footnote should look like this:
Fake Author, "Fake Title," Fake Journal (October 2011): 16-24.
To cite a newspaper article, use the following format: "Article Name," Newspaper Name, Day Month Year, Section, Edition. Your footnote will then look like the following:
"Fake Article," The Fake Times, 1st September 2011, sec. 3, E1.
To cite a Web site, use the following format: Author, Title, URL (Month Year). In the end, your footnote should look like this:
Fake Author, Fake Title, http://www.notreal.com (August 2011).