BibMe is a free automatic bibliography generator that supports MLA, APA, Chicago, and Turabian formatting. BibMe leverages databases provided by Amazon, FindArticles, Yahoo! News, and CiteULike to quickly and accurately AutoFill citation information for you. BibMe will then format the citation information according to the rules and guidelines of the style guides. If you prefer, you can enter your citation information manually. BibMe also contains a quick citation guide to show students the correct syntax for citing in various formats.
quite good site but search tool to be more robust , which can search any kind of document available in the internet.
visit the site http://www.bibme.org/