?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Ken&rft.au=Herold%2C+Ken&rft.aulast=Herold&rft.date=6+November+2009&rft.title=EL+Commons%3A+Using+the+Voyager+Developer+Zone&rft.genre=proceeding