Não informado. (2021). Illinois Bulletin. University of Illinois at Urbana-Champaign, Agricultural Experiment Station.
Chicago-Zitierstil (17. Ausg.)Não informado. Illinois Bulletin. Urbana, Ill: University of Illinois at Urbana-Champaign, Agricultural Experiment Station, 2021.
MLA-Zitierstil (8. Ausg.)Não informado. Illinois Bulletin. University of Illinois at Urbana-Champaign, Agricultural Experiment Station, 2021.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.