Chambers, Kenton L. “Artemisia Estesii (Asteraceae), a New Diploid Species of the Artemisia Ludoviciana Complex in the Pacific Northwest (U.S.A.)”. Journal of the Botanical Research Institute of Texas 11, no. 1 (July 24, 2017): 1–9. Accessed October 3, 2023. https://journals.brit.org/jbrit/article/view/1132.