International Society of Ultrasound in Obstetrics and Gynecology. (1991). Ultrasound in obstetrics & gynecology. Parthenon Publishing.
Cita Chicago Style (17a ed.)International Society of Ultrasound in Obstetrics and Gynecology. Ultrasound in Obstetrics & Gynecology. Carnforth, Inglaterra: Parthenon Publishing, 1991.
Cita MLA (8a ed.)International Society of Ultrasound in Obstetrics and Gynecology. Ultrasound in Obstetrics & Gynecology. Parthenon Publishing, 1991.
Precaución: Estas citas no son 100% exactas.