Weber, W. A., & Wittmann, R. C. (2012). Colorado flora: A field guide to the vascular plants (4th ed.). University Press of Colorado.
Style de citation Chicago (17e éd.)Weber, William A., et Ronald C. Wittmann. Colorado Flora: A Field Guide to the Vascular Plants. 4th ed. Boulder, Colo.: University Press of Colorado, 2012.
Style de citation MLA (9e éd.)Weber, William A., et Ronald C. Wittmann. Colorado Flora: A Field Guide to the Vascular Plants. 4th ed. University Press of Colorado, 2012.
Attention : ces citations peuvent ne pas être correctes à 100%.