Sophian, Ade, and Hasbullah Hasbullah. “Increasing Production Yield With Through Feasibility Investment Analysis in Plastic Recycling Industry”. Journal of Industrial Engineering & Management Research 2, no. 6 (December 14, 2021): 202 - 211. Accessed January 9, 2025. https://mail.jiemar.org/index.php/jiemar/article/view/244.