APA (7th ed.) Citation

Zim, H., & Martin, A. C. (1950). Flowers: A guide to familiar American wildflowers. Golden Press.

Chicago Style (17th ed.) Citation

Zim, H.S, and Alexander C. Martin. Flowers: A Guide to Familiar American Wildflowers. New York: Golden Press, 1950.

MLA (9th ed.) Citation

Zim, H.S, and Alexander C. Martin. Flowers: A Guide to Familiar American Wildflowers. Golden Press, 1950.