Farid, Mohammad, Henny Yulius, Irsan Irsan, Susriyati Susriyati, and Bobby Maulana. “Pengendalian Kualitas Pengolahan Kulit Uptd Kota Padang Panjang Menggunakan Metode Six-Sigma”. Jurnal Teknologi Dan Sistem Informasi Bisnis 4, no. 1 (January 26, 2022): 186-192. Accessed August 17, 2026. http://103.241.192.17/~jurnalunidha/index.php/jteksis/article/view/399.