Não informado. (1952). Nebraska Experiment Station Quarterly. Nebraska Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Nebraska Experiment Station Quarterly. Lincoln, Neb: Nebraska Agricultural Experiment Station, 1952.
MLA-referens (8:e uppl.)Não informado. Nebraska Experiment Station Quarterly. Nebraska Agricultural Experiment Station, 1952.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.