APA(7版)引用形式

Não informado. (2009). Ob-Gyn Observer: The News Magazine of Obstetrics and Gynecology. [s.n.].

Chicagoスタイル(17版)引用形式

Não informado. Ob-Gyn Observer: The News Magazine of Obstetrics and Gynecology. New York: [s.n.], 2009.

MLA(8版)引用形式

Não informado. Ob-Gyn Observer: The News Magazine of Obstetrics and Gynecology. [s.n.], 2009.

警告: この引用は必ずしも正確ではありません.