Librarians are frequently consulted about proper citation formats and support the use of PC-based personal bibliographic citation management programs, such as EndNote, often used by faculty and graduate students. Recently, free or inexpensive Web-based tools have been developed that create citations and format bibliographies. An analysis of citations generated by these programs shows that they are as accurate as EndNote and offer some advantages to undergraduates, but that some knowledge of proper citation formats is necessary to use these programs effectively.