Não informado. Animal Sciences and Industry Research Report. Oklahoma Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Animal Sciences and Industry Research Report. Stillwater, Okla: Oklahoma Agricultural Experiment Station.
MLA-referens (8:e uppl.)Não informado. Animal Sciences and Industry Research Report. Oklahoma Agricultural Experiment Station.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.