Kallayanapattharasit, R., and N. Vititanon. “Application of By-Laws and Policy Tools to Promote the Waste Separation in the Origin: Study on Local Administrative Organizations in Chiang Rai Province”. Connexion: Journal of Humanities and Social Sciences, vol. 9, no. 2, Dec. 2020, pp. 66-86, https://so05.tci-thaijo.org/index.php/MFUconnexion/article/view/245317.