APA (7th ed.) Citation

Weber, W. A. (2012). Colorado flora, Eastern slope: A guide to the vascular plants (4th ed.). University Press of Colorado.

Chicago Style (17th ed.) Citation

Weber, William A. Colorado Flora, Eastern Slope: A Guide to the Vascular Plants. 4th ed. Boulder: University Press of Colorado, 2012.

MLA (9th ed.) Citation

Weber, William A. Colorado Flora, Eastern Slope: A Guide to the Vascular Plants. 4th ed. University Press of Colorado, 2012.