APA (7e ed.) Bronvermelding

Não informado. (1939). Contributions from the University of Michigan Herbarium. University of Michigan Herbarium.

Chicago (17e ed.) Bronvermelding

Não informado. Contributions from the University of Michigan Herbarium. Ann Arbor, Mich: University of Michigan Herbarium, 1939.

MLA (8e ed.) Bronvermelding

Não informado. Contributions from the University of Michigan Herbarium. University of Michigan Herbarium, 1939.

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