APA način citiranja (7. izdanje)

Callen, P. W. (2008). Ultrasonography in obstetrics and gynecology (5th ed.). Saunders Elsevier.

Čikaški stil citiranja (17. izdanje)

Callen, Peter W. Ultrasonography in Obstetrics and Gynecology. 5th ed. Philadelphia, PA: Saunders Elsevier, 2008.

MLA način citiranja (9. izdanje)

Callen, Peter W. Ultrasonography in Obstetrics and Gynecology. 5th ed. Saunders Elsevier, 2008.