Não informado. (2001). Journal of the American Animal Hospital Association. American Animal Hospital Association.
Chicago-referens (17:e uppl.)Não informado. Journal of the American Animal Hospital Association. Lakewood, Colo: American Animal Hospital Association, 2001.
MLA-referens (8:e uppl.)Não informado. Journal of the American Animal Hospital Association. American Animal Hospital Association, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.