VALEN, K. siambaton; SIRAIT, G. . PENINGKATAN KUALITAS AIR SUMUR BOR DENGAN PENDEKATAN DMAIC. Computer and Science Industrial Engineering (COMASIE), [S. l.], v. 6, n. 3, p. 125–137, 2022. Disponível em: https://forum.upbatam.ac.id/index.php/comasiejournal/article/view/5245. Acesso em: 21 nov. 2024.