Dyfyniad APA
Weber, W. A., & Wittmann, R. C. (2012). Colorado flora: A guide to the vascular plants (4th ed.). University Press of Colorado.
Dyfyniad Arddull Chicago
Weber, William A., and Ronald C. Wittmann. Colorado Flora: A Guide to the Vascular Plants. 4th ed. Boulder: University Press of Colorado, 2012.
Dyfyniad MLA
Weber, William A., and Ronald C. Wittmann. Colorado Flora: A Guide to the Vascular Plants. 4th ed. University Press of Colorado, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.