APA (7e ed.) Bronvermelding

Não informado. AERR. University of Illinois at Urbana-Champaign, Agricultural Experiment Station.

Chicago (17e ed.) Bronvermelding

Não informado. AERR. Urbana, Ill: University of Illinois at Urbana-Champaign, Agricultural Experiment Station.

MLA (8e ed.) Bronvermelding

Não informado. AERR. University of Illinois at Urbana-Champaign, Agricultural Experiment Station.

Let op: Deze citaties zijn niet altijd 100% accuraat.