APA (7th ed.) Citation

(1991). Ultrasound in obstetrics & gynecology. Wiley.

Chicago Style (17th ed.) Citation

Ultrasound in Obstetrics & Gynecology. New York, NY [u.a.]: Wiley, 1991.

MLA (8th ed.) Citation

Ultrasound in Obstetrics & Gynecology. Wiley, 1991.