Suparto, Suparto, and Deni Yusanto. “ANALISA KUALITAS PRODUK DI PT. SURABAYA MEKA BOX LTD DENGAN METODE SIX SIGMA DAN FMEA”. Proceeding SENDI_U (August 20, 2018). Accessed September 20, 2020. https://unisbank.ac.id/ojs/index.php/sendi_u/article/view/5959.