Não informado. (2020). Progress in Cattle & Sheep Practice. American Veterinary Publications.
Chicago-referens (17:e uppl.)Não informado. Progress in Cattle & Sheep Practice. Wheaton, Ill: American Veterinary Publications, 2020.
MLA-referens (8:e uppl.)Não informado. Progress in Cattle & Sheep Practice. American Veterinary Publications, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.