Pasmawati, Yanti, and Amiluddin zahri. “PENINGKATAN KUALITAS PRODUK DENGAN PENDEKATAN METODE SIX SIGMA”. Jurnal Tekno 13, no. 2 (January 26, 2019): 23–34. Accessed April 29, 2024. https://journal.binadarma.ac.id/index.php/jurnaltekno/article/view/134.