Tampubolon, Roni Chandra, and Elsya Paskaria Loyda Tarigan. “USULAN PERBAIKAN SISTEM KERJA PADA DEPARTEMEN CNC DI PT OPTIMECH ENGINEERING PRODUCT AND SERVICES”. Computer and Science Industrial Engineering (COMASIE) 9, no. 2 (September 11, 2023). Accessed December 22, 2024. https://forum.upbatam.ac.id/index.php/comasiejournal/article/view/7993.