Não informado. (2000). Transactions of the Amerian Association of Obstetricians, Gynecologists and Abdominal Surgeons. American Association of Obstetricians and Gynecologists.
Chicago-referens (17:e uppl.)Não informado. Transactions of the Amerian Association of Obstetricians, Gynecologists and Abdominal Surgeons. Philadelphia, Pa: American Association of Obstetricians and Gynecologists, 2000.
MLA-referens (8:e uppl.)Não informado. Transactions of the Amerian Association of Obstetricians, Gynecologists and Abdominal Surgeons. American Association of Obstetricians and Gynecologists, 2000.
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