Não informado. (1977). Current problems in obstetrics and gynecology. Year Book Medical Publishers.
Chicagoスタイル(17版)引用形式Não informado. Current Problems in Obstetrics and Gynecology. Chicago, Ill: Year Book Medical Publishers, 1977.
MLA(8版)引用形式Não informado. Current Problems in Obstetrics and Gynecology. Year Book Medical Publishers, 1977.
警告: この引用は必ずしも正確ではありません.