Lipscomb, Barney, A. Michael Powell, and Colleagues and Friends of Billie Lee Turner. “Billie Lee Turner (29 August 1925–27 May 2020)”. Journal of the Botanical Research Institute of Texas 14, no. 2 (December 7, 2020): 521–536. Accessed April 18, 2024. https://journals.brit.org/jbrit/article/view/1026.