Não informado. (2009). Ob-Gyn Observer: The News Magazine of Obstetrics and Gynecology. [s.n.].
Style de citation Chicago (17e éd.)Não informado. Ob-Gyn Observer: The News Magazine of Obstetrics and Gynecology. New York: [s.n.], 2009.
Style de citation MLA (8e éd.)Não informado. Ob-Gyn Observer: The News Magazine of Obstetrics and Gynecology. [s.n.], 2009.
Attention : ces citations peuvent ne pas être correctes à 100%.