Schneider, K. M., & Patrick, S. K. (2009). Pre Test Obstetric & Gynecology. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)Schneider, Karen M., agus Stephen K. Patrick. Pre Test Obstetric & Gynecology. McGraw-Hill Book Company, 2009.
Lua MLA (9ú heag.)Schneider, Karen M., agus Stephen K. Patrick. Pre Test Obstetric & Gynecology. McGraw-Hill Book Company, 2009.
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