Não informado. (1946). Bulletin of the Oklahoma Agricultural Experiment Station. Oklahoma Agricultural and Mechanical College.
Chicago-referens (17:e uppl.)Não informado. Bulletin of the Oklahoma Agricultural Experiment Station. Stillwater, Okla: Oklahoma Agricultural and Mechanical College, 1946.
MLA-referens (8:e uppl.)Não informado. Bulletin of the Oklahoma Agricultural Experiment Station. Oklahoma Agricultural and Mechanical College, 1946.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.