APA način citiranja (7. izdanje)

CALLEN, P. W. (2000). Ultrasonography in obstetrics and gynecology.-- ed.4. W.B. Saunders Company.

Čikaški stil citiranja (17. izdanje)

CALLEN, Peter W. Ultrasonography in Obstetrics and Gynecology.-- Ed.4. Philadelphia: W.B. Saunders Company, 2000.

MLA način citiranja (9. izdanje)

CALLEN, Peter W. Ultrasonography in Obstetrics and Gynecology.-- Ed.4. W.B. Saunders Company, 2000.