Citation management software lets you store your research materials and automatically create formatted citations and bibliographies while you write.

RefWorks is a web-based bibliography and database manager that allows you to create your own personal database by importing references from text files or online databases and other various sources. You can use these references in writing papers and automatically format the paper and the bibliography in seconds.
Good for: Saving, organizing and formatting citations in your personal database.
Contains: Bibliography manager.
This web-based bibliography manager lets you save citations to journal articles, books, web sites and more into your personal online database. You'll be able to quickly link to online articles, organize and share your references, and automatically create formatted bibliographies in all the major citation formats, including APA, MLA, and Chicago styles. Learn more on the RefWorks Basics page.

Mendeley is a free reference manager and an academic social network. Manage your research, showcase your work, and collaborate with colleagues. See the Mendeley Guide to learn about benefits for UNLV researchers.
Good for: Managing and formatting citations.
Contains: Bibliography manager.
Zotero is a free, open source program to collect, organize and store your research sources.