Munsuk, Wanniga, and Pimwadee Pornpongrungrueng. “Conservation status of Gynura in Thailand”. KKU Science Journal 50, no. 3 (January 18, 2023): 212–222. accessed April 24, 2025. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/251382.