Burkman, r. t. (2000). Obstetric and gynecology clinic of north america. WB Sauders Company.
Lua i Stíl Chicago (17ú heag.)Burkman, ronald t. Obstetric and Gynecology Clinic of North America. WB Sauders Company, 2000.
Lua MLA (9ú heag.)Burkman, ronald t. Obstetric and Gynecology Clinic of North America. WB Sauders Company, 2000.
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