APA (7e ed.) Bronvermelding

Não informado. (1929). Butler University botanical studies. Butler University, Department of Botany.

Chicago (17e ed.) Bronvermelding

Não informado. Butler University Botanical Studies. Indianapolis, Ind: Butler University, Department of Botany, 1929.

MLA (8e ed.) Bronvermelding

Não informado. Butler University Botanical Studies. Butler University, Department of Botany, 1929.

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