For courses in the sciences, one commonly used style is the Publication manual of the American Psychological Association.
You can consult print copies of many style manuals while in the library. We keep them on reserve and/or in the reference collection on Level A.
You can also use Cite Source, which shows you how to cite a variety of sources, from Web sites to books in print.
Disclaimer: always check with your professors about which styles they might require for their courses.
You can send citations directly from most databases to RefWorks. It's a bibliography maker, AND it works with our databases.
First, set up an account with your own username and password. Then, once you've found the citations you want, you can export the citations from the database to RefWorks.
To generate a bibliography or list of works cited for your paper, click on Create Bibliography, and select an output format (Word document).
Refworks has quick tutorials you can follow, or you can ask me to help you with specifics!