A Defect analysis on R8 cover product using six sigma method at PT Amtek Engineering. Jurnal Manajemen Rekayasa dan Inovasi Bisnis, [S. l.], v. 5, n. 1, p. 69–85, 2026. DOI: 10.62375/0fk42596. Disponível em: https://journal.iteba.ac.id/index.php/jmrib/article/view/866. Acesso em: 1 sep. 2026.