APA (7th ed.) Citation

Tryon, R. M., & Fassett, N. C. (1940). The ferns and fern allies of Wisconsin. Department of botany, University of Wisconsin Press.

Chicago Style (17th ed.) Citation

Tryon, Rolla M., and Norman C. Fassett. The Ferns and Fern Allies of Wisconsin. [Madison]: Department of botany, University of Wisconsin Press, 1940.

MLA (9th ed.) Citation

Tryon, Rolla M., and Norman C. Fassett. The Ferns and Fern Allies of Wisconsin. Department of botany, University of Wisconsin Press, 1940.