Não informado. (1959). Illinois research. University of Illinois at Urbana-Champaign, Agricultural Experiment Station.
Chicago-Zitierstil (17. Ausg.)Não informado. Illinois Research. Urbana, Ill: University of Illinois at Urbana-Champaign, Agricultural Experiment Station, 1959.
MLA-Zitierstil (8. Ausg.)Não informado. Illinois Research. University of Illinois at Urbana-Champaign, Agricultural Experiment Station, 1959.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.