एपीए उद्धरण

Callahan, T. L. (2001). Blueprints in obstetrics and gynecology. Malden, Massachusetts: Blackwell Science.

शिकागो स्टाइल उद्धरण

Callahan, Tamara L. Blueprints in Obstetrics and Gynecology. Malden, Massachusetts: Blackwell Science, 2001.

एमएलए उद्धरण

Callahan, Tamara L. Blueprints in Obstetrics and Gynecology. Malden, Massachusetts: Blackwell Science, 2001.