APA

University of Michigan Herbarium - Ann Arbor M., . (1939). Contribution from the University of Michigan Herbarium. Michigan: University of Michigan Herbarium - Ann Arbor, Michigan.

Chicago

University of Michigan Herbarium - Ann Arbor Michigan, . 1939. Contribution from the University of Michigan Herbarium. Michigan: University of Michigan Herbarium - Ann Arbor, Michigan.

Harvard

University of Michigan Herbarium - Ann Arbor M., . (1939). Contribution from the University of Michigan Herbarium. Michigan: University of Michigan Herbarium - Ann Arbor, Michigan.

MLA

University of Michigan Herbarium - Ann Arbor Michigan, . Contribution from the University of Michigan Herbarium. Michigan: University of Michigan Herbarium - Ann Arbor, Michigan. 1939.