Citation management packages allow you to gather citations from a variety of databases into a single location and arrange them in folders. Some packages allow you to include notes about the sources and have bibliographies created in the style of your choice.
RefWorks A web-based bibliography and database manager. You must be a current IUSB student, faculty, or staff to create an account.
Zotero A free site that allows you to collect, organize, cite, and share your research sources.