Não informado. (1952). Nebraska Experiment Station Quarterly. Nebraska Agricultural Experiment Station.
Chicago (17e ed.) BronvermeldingNão informado. Nebraska Experiment Station Quarterly. Lincoln, Neb: Nebraska Agricultural Experiment Station, 1952.
MLA (8e ed.) BronvermeldingNão informado. Nebraska Experiment Station Quarterly. Nebraska Agricultural Experiment Station, 1952.
Let op: Deze citaties zijn niet altijd 100% accuraat.