RedLightGreen

This search engine was reccommended by Roy Tennant:

RedLightGreen helps you locate the most important books and other research materials in your area of interest, and find out whether what you need is available at your favorite library. Sign in, and you can format and send citations any way you want: MLA, APA, Chicago, Harvard, Turabian. Just click - and it's done

http://www.redlightgreen.com/ucwprod/web/workspace.jsp