Não informado. (2018). Progress in Swine Practice. American Veterinary Publications.
Chicago-referens (17:e uppl.)Não informado. Progress in Swine Practice. Wheaton, Ill: American Veterinary Publications, 2018.
MLA-referens (8:e uppl.)Não informado. Progress in Swine Practice. American Veterinary Publications, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.