Singjai, Komkrit, and Chatmongkon Wongrathanandha. “The implementation of environmental practices in small businesses operating in a green university”. Kasetsart Journal of Social Sciences 43, no. 4 (October 12, 2022): 991–998. accessed October 6, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/261668.