Hasibuan, Abdurrozzaq, Susi Ekalestari, Abdul Rahman Suleman, Adek Khadijatul Z Harahap, Masnilam Hasibuan, Janner Simarmata, Desi Novita, et al. “Optimization Manufacturing System Model With Recycling Oriented”. International Journal of Engineering & Technology 7, no. 3.5 (July 7, 2018): 112–115. Accessed April 27, 2024. https://sciencepubco.com/index.php/ijet/article/view/21664.