APA citiranje

Callen, P. W. (1988). Ultrasonography in obstetrics and Gynecology.

Chicago Style (17th ed.) Citation

Callen, Peter W. Ultrasonography in Obstetrics and Gynecology. 1988.

MLA citiranje

Callen, Peter W. Ultrasonography in Obstetrics and Gynecology. 1988.