Phutthai, Thamarat, Martin Sands, and Kitichate Sridith. “Field surveys of natural populations of Begonia L. in Thailand”. Thai Forest Bulletin (Botany), no. 37 (November 26, 2014): 186–196. accessed September 15, 2026. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24372.