zulkarnain, muhammad, and G. Sirait. “PERANCANGAN ALAT BANTU UNTUK ARRANGING OUTER DEVICES CRASH STOP DI PT XYZ”. Computer and Science Industrial Engineering (COMASIE), vol. 3, no. 3, Nov. 2020, pp. 112-21, https://ejournal.upbatam.ac.id/index.php/comasiejournal/article/view/2230.