Não informado. (1997). Reference & User Services Quarterly. American Library Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Reference & User Services Quarterly. Chicago, Ill: American Library Association, 1997.
MLA-Zitierstil (8. Ausg.)Não informado. Reference & User Services Quarterly. American Library Association, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.