Thammarong, Woranart, Charun Maknoi, and Prateep Panyadee. “Heterostemma Succosum (Apocynaceae), a New Record for Laos”. Thai Forest Bulletin (Botany) 47, no. 2 (October 18, 2019): 187–189. Accessed March 28, 2024. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/164461.