Do I Need a Bibliography?
A bibliography is not just “works cited.” It is all the relevant material you drew upon to write the paper the reader holds.

If you read any articles or books in preparing you paper, you need a bibliography or footnotes.
If you cite the arguments of “critics” and “supporters,” even if you don’t name them or quote them directly, you are likely referring to information you read in books or articles as opposed to information you’ve gathered firsthand, like a news reporter, and so you need a bibliography.
If you quote sources and put some of the reference information in the text, you still need a bibliography, so that readers can track down the source material for themselves.
If you use footnotes to identify the source of your material or the authors of every quote, you DO NOT need a bibliography, UNLESS there are materials to which you do not refer directly (or if you refer to additional sections of the materials you already referenced) that also helped you reach your conclusions. In any event, your footnotes need to follow the formatting guidelines below.
How to Write a Bibliography
These guidelines follow those of the American Psychological Association and may be slightly different than what you’re used to, but we will stick with them for the sake of consistency.

Notice the use of punctuation. Publication titles may be either italicized or underlined, but not both.

Books

Books are the bibliography format with which you’re probably most familiar. Books follow this pattern:

Author Last Name, Author First Name. (Publication Year) Title. Publisher’s City: Publisher. Page numbers.

Alexander, Carol. (2001) Market Models: A Guide to Financial Data Analysis. New York, NY: John Wiley & Sons. pp. 200-220.

Periodicals

Periodicals remove the publisher city and name and add the title of the article and the volume or issue