islamia, rifatul, and subchan Asy’ari. “Six Sigma DMAIC Penerapan Six Sigma DMAIC Pada Produk Batu Split (Studi Kasus PT.MBP)”. Matrik : Jurnal Manajemen dan Teknik Industri Produksi 24, no. 1 (September 30, 2023): 63–72. Accessed May 31, 2025. https://journal.umg.ac.id/index.php/matriks/article/view/5845.