Nurindrasari, Diana, et al. “Designing A Circular Value Chain Model for Plastic Waste Upcycling: Case Study in TPS 3R Basama”. Proceeding Economy of Asia International Conference, vol. 2025, no. 1, Jan. 2026, pp. 141-5, https://conference.asia.ac.id/index.php/ecosia/article/view/245.