Hogan, Tim, und Brian Elliott. „Floristic Survey of the Sangre De Cristo Wilderness and Environs (Colorado, U.S.A.)“. Journal of the Botanical Research Institute of Texas 16, no. 1 (Juli 15, 2022): 195–221. Zugegriffen September 5, 2025. https://journals.brit.org/jbrit/article/view/1227.