Não informado. (1997). Reference & User Services Quarterly. American Library Association.
Chicagoスタイル(17版)引用形式Não informado. Reference & User Services Quarterly. Chicago, Ill: American Library Association, 1997.
MLA(8版)引用形式Não informado. Reference & User Services Quarterly. American Library Association, 1997.
警告: この引用は必ずしも正確ではありません.