APA (7th ed.) Citation

Steyermark, J. A. (1940). Spring flora of Missouri. Missouri Botanical Garden; Field Museum of Natural History.

Chicago Style (17th ed.) Citation

Steyermark, Julian A. Spring Flora of Missouri. St. Louis : Chicago: Missouri Botanical Garden; Field Museum of Natural History, 1940.

MLA (9th ed.) Citation

Steyermark, Julian A. Spring Flora of Missouri. Missouri Botanical Garden; Field Museum of Natural History, 1940.