Não informado. (1997). Reference & User Services Quarterly. American Library Association.
Chicago-referens (17:e uppl.)Não informado. Reference & User Services Quarterly. Chicago, Ill: American Library Association, 1997.
MLA-referens (8:e uppl.)Não informado. Reference & User Services Quarterly. American Library Association, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.