Thapyai, Chirdsak, Paul Wilkin, and Kongkanda Chayamarit. 2014. “A Rare Endemic Thai Yam Rediscovered: Dioscorea Inopinata Prain & Burkill (Dioscoreaceae) and Its Affinities”. Thai Forest Bulletin (Botany), no. 32 (December):151-58. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24375.