putra, afriansyah, and E. Susanti. “ANALISIS PENYEBAB KERUSAKAN MESIN FUNCTION TESTER 9770”. Computer and Science Industrial Engineering (COMASIE), vol. 6, no. 5, Jan. 2022, pp. 1-11, https://forum.upbatam.ac.id/index.php/comasiejournal/article/view/5374.