?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Margery&rft.aulast=Tibbetts&rft.au=Tibbetts%2C+Margery&rft.title=Direct+Linking+at+the+CDL&rft.date=7+May+2009&rft.genre=proceeding