Bachrul Ulum, Syam Harits. “PENGENDALIAN KUALITAS PRODUK CACAHAN PLASTIK DENGAN MENGGUNAKAN METODE SQC (Statistical Quality Control) ”. Jurnal Valtech 1, no. 1 (December 16, 2019): 110-118. Accessed July 14, 2026. https://ejournal.itn.ac.id/valtech/article/view/100.