For undergraduates (or those citing less than 50 sources) we suggest: free web citation creation helpers such as:
For more intense research, UofL now has a site license to EndNote, Reference Manager, and EndNoteWeb. These are software packages that help you manage and format your citations and are most appropriate for graduate students and faculty.
In either case, ALWAYS check the citation provided by these programs against the official citation manual for the style you are using (MLA, APA, Turabian, etc.).