APA (7th ed.) Citation

Eyerdam, W. J. (1928). Pinus pumila. University of Michigan Herbarium Catalog Collection.

Chicago Style (17th ed.) Citation

Eyerdam, Walter J. Pinus Pumila. University of Michigan Herbarium Catalog Collection, 1928.

MLA (9th ed.) Citation

Eyerdam, Walter J. Pinus Pumila. University of Michigan Herbarium Catalog Collection, 1928.

Warning: These citations may not always be 100% accurate.