Cita APA (7a ed.)
(1991). Ultrasound in obstetrics & gynecology. [Parthenon Pub.] : International Society of Ultrasound in Obstetrics and Gynecology.
Cita Chicago Style (17a ed.)
Ultrasound in Obstetrics & Gynecology. [Carnforth, Lancs, UK] ; [Park Ridge, N.J., USA]: [Parthenon Pub.] : International Society of Ultrasound in Obstetrics and Gynecology, 1991.
Cita MLA (9a ed.)
Ultrasound in Obstetrics & Gynecology. [Parthenon Pub.] : International Society of Ultrasound in Obstetrics and Gynecology, 1991.
Precaución: Estas citas no son 100% exactas.