Sulami, Antonius Priyo Nugroho, Takehiko Murayama, and Shigeo Nishikizawa. “Current Issues and Situation of Producer Responsibility in Waste Management in Indonesia”. Environment and Natural Resources Journal 16, no. 1 (November 22, 2017): 70-81. Accessed September 25, 2020. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/106711.