Siregar, Dede Iskandar, Hichmaed Tachta Hinggo Suandevin, and Hammam Zaki. “Managing Circular Economy Barriers in Recycling Companies”. Jurnal Manajemen Teknologi 19, no. 3 (December 3, 2020): 239–248. Accessed April 29, 2024. https://journal.sbm.itb.ac.id/index.php/mantek/article/view/3635.