Coffman, S. (2003). Going live: Starting and running a virtual reference service. American Library Association.
Chicago-Zitierstil (17. Ausg.)Coffman, Steve. Going Live: Starting and Running a Virtual Reference Service. Chicago: American Library Association, 2003.
MLA-Zitierstil (9. Ausg.)Coffman, Steve. Going Live: Starting and Running a Virtual Reference Service. American Library Association, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.