Lumbantoruan, Imran Suriadi, and Elva susanti. 2021. “PENGUKURAN TINGKAT EFEKTIVITAS MESIN MILLING DI PT NOK FREUDENBERG BATAM”. Computer and Science Industrial Engineering (COMASIE) 4 (6):52-61. https://forum.upbatam.ac.id/index.php/comasiejournal/article/view/3559.