Cita APA (7a ed.)

Williams, D., & Butler, B. (2010). The Tallgrass Prairie Center Guide to Seed and Seedling Identification in the Upper Midwest. Published for the Tallgrass Prairie Center by the University of Iowa Press.

Cita Chicago Style (17a ed.)

Williams, Dave, y Brent Butler. The Tallgrass Prairie Center Guide to Seed and Seedling Identification in the Upper Midwest. Iowa City [Iowa]: Published for the Tallgrass Prairie Center by the University of Iowa Press, 2010.

Cita MLA (8a ed.)

Williams, Dave, y Brent Butler. The Tallgrass Prairie Center Guide to Seed and Seedling Identification in the Upper Midwest. Published for the Tallgrass Prairie Center by the University of Iowa Press, 2010.