Παραπομπή APA

Donald E Thrall & Donald E Thrall. (2002). Text book of veterinary diagnostic radiology (4.). Philadelphia.

Παραπομπή Chicago Style

Donald E Thrall και Donald E Thrall. Text Book of Veterinary Diagnostic Radiology. 4. Philadelphia, 2002.

Παραπομπή MLA

Donald E Thrall και Donald E Thrall. Text Book of Veterinary Diagnostic Radiology. 4. Philadelphia, 2002.