Boontositrakul, Kittiphan, Pramot Weeranukul, Kittipong Suweero, and Wiharn Deepanya. “Development of Water Hyacinth Gypsum Broad for Community Enterprise”. Journal of Engineering, RMUTT 19, no. 1 (June 29, 2021): 113–123. Accessed December 10, 2022. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/243192.