Thapyai, Chirdsak, Paul Wilkin, and Kongkanda Chayamarit. “Dioscorea Pseudo-Tomentosa Prain & Burkill (Dioscoreaceae); An Endangered Limestone Endemic of Central Thailand”. Thai Forest Bulletin (Botany), no. 34 (December 8, 2014): 215–221. Accessed September 30, 2022. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24220.