APA (7th ed.) Citation

Weber, W. A. (1987). Colorado flora, Western Slope. Colorao Associated University Press.

Chicago Style (17th ed.) Citation

Weber, William A. Colorado Flora, Western Slope. Boulder, Colo.: Colorao Associated University Press, 1987.

MLA (9th ed.) Citation

Weber, William A. Colorado Flora, Western Slope. Colorao Associated University Press, 1987.