Não informado. (2002). Animal Science Research Report. Oklahoma Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Animal Science Research Report. Stillwater, Okla: Oklahoma Agricultural Experiment Station, 2002.
MLA-referens (8:e uppl.)Não informado. Animal Science Research Report. Oklahoma Agricultural Experiment Station, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.