Sanders, R. C. (1985). The Principles and Practice of Ultrasonography in Obstetrics and Gynecology.
Lua i Stíl Chicago (17ú heag.)Sanders, Roger C. The Principles and Practice of Ultrasonography in Obstetrics and Gynecology. 1985.
Lua MLA (9ú heag.)Sanders, Roger C. The Principles and Practice of Ultrasonography in Obstetrics and Gynecology. 1985.
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