Não informado. (1978). Veterinary surgery. American College of Veterinary Surgeons.
Chicago-referens (17:e uppl.)Não informado. Veterinary Surgery. Philadelphia, Pa: American College of Veterinary Surgeons, 1978.
MLA-referens (8:e uppl.)Não informado. Veterinary Surgery. American College of Veterinary Surgeons, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.