Não informado. (2021). Station Bulletin. Purdue University, Agricultural Experiment Station.
Chicago (17e ed.) BronvermeldingNão informado. Station Bulletin. Lafayette, Ind: Purdue University, Agricultural Experiment Station, 2021.
MLA (8e ed.) BronvermeldingNão informado. Station Bulletin. Purdue University, Agricultural Experiment Station, 2021.
Let op: Deze citaties zijn niet altijd 100% accuraat.