Calvin College has developed a free bibliography composer KnightCite.
It allows users to create MLA, APA, and Chicago/Turabian citations.
For more details on the project, and its student author, Justin Searls, see Calvin College's press release.
A collaborative project originally funded by the Center for Educational Technology, Middlebury College, and developed by Colby, Bates, and Bowdoin Colleges.
Please direct questions and enquiries to firstname.lastname@example.org