Gaya APA

Berthold, B. (2004). The Practice of Ultrasound : A Step - by - Step Guide to Abdominal Scanning (-). Stuttgart New York: Georg Thieme verlag.

Gaya MLA

Berthold, B.. The Practice of Ultrasound : A Step - by - Step Guide to Abdominal Scanning. - Stuttgart New York: Georg Thieme verlag, 2004. Text.