Não informado. (1958). Clinical Obstetrics and Gynecology. J. B. Lippincott.
Lua i Stíl Chicago (17ú heag.)Não informado. Clinical Obstetrics and Gynecology. Philadelphia, Pa: J. B. Lippincott, 1958.
Lua MLA (8ú heag.)Não informado. Clinical Obstetrics and Gynecology. J. B. Lippincott, 1958.
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