Não informado. (1940). American Journal of Veterinary Research. American Veterinary Medical Association.
Chicago-referens (17:e uppl.)Não informado. American Journal of Veterinary Research. Chicago, Ill: American Veterinary Medical Association, 1940.
MLA-referens (8:e uppl.)Não informado. American Journal of Veterinary Research. American Veterinary Medical Association, 1940.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.