Kallayanapattharasit, Ridthipat, and Nuttakorn Vititanon. 2020. “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 9 (2). Chiang Rai, Thailand:66-86. https://so05.tci-thaijo.org/index.php/MFUconnexion/article/view/245317.