APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.