Sasananan, M., M. Mungtularak, T. Suksangwal, and S. Sasananan. “Preliminary Study on Waste Management Behavior of University Students”. Thai Industrial Engineering Network Journal, vol. 6, no. 1, June 2020, pp. 73-81, https://ph02.tci-thaijo.org/index.php/ienj/article/view/240742.