Cita APA (7a ed.)

Runkel, S. T., & Roosa, D. M. (2009). Wildflowers of the Tallgrass Prairie: The Upper Midwest (2nd ed.). University of Iowa Press.

Cita Chicago Style (17a ed.)

Runkel, Sylvan T., y Dean M. Roosa. Wildflowers of the Tallgrass Prairie: The Upper Midwest. 2nd ed. Iowa City: University of Iowa Press, 2009.

Cita MLA (8a ed.)

Runkel, Sylvan T., y Dean M. Roosa. Wildflowers of the Tallgrass Prairie: The Upper Midwest. 2nd ed. University of Iowa Press, 2009.