One of the best online resources for writers I’ve come across recently is a website called BibMe. Using Bibme, writers can craft bibliographies for their papers very quickly–and best of all–for free. BibMe can even find the citation information for the book you’re citing (be careful to make sure you’re citing the correct edition). The site supports the following formats: MLA, APA, Chicago, and Tubarian. NB: the APA format style has not yet been updated to reflect the sixth edition of the Publication Manual of the American Psychological Association as of this posting.