PENINGKATAN KUALITAS PRODUK DENGAN PENDEKATAN METODE SIX SIGMA. Jurnal Tekno, [S. l.], v. 13, n. 2, p. 23–34, 2019. Disponível em: https://journal.binadarma.ac.id/index.php/jurnaltekno/article/view/134. Acesso em: 1 jul. 2025.