Não informado. (1952). Nebraska Experiment Station Quarterly. Nebraska Agricultural Experiment Station.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Nebraska Experiment Station Quarterly. Lincoln, Neb: Nebraska Agricultural Experiment Station, 1952.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Nebraska Experiment Station Quarterly. Nebraska Agricultural Experiment Station, 1952.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.