Arif, Donny, and Nikma Yucha. “PENGENDALIAN KUALITAS PRODUK ELPIJI PSO (Public Service Obligation) DENGAN IMPLEMENTASI STATISTICAL PROCESS CONTROL”. Accounting and Management Journal 5, no. 1 (June 30, 2021): 81–88. Accessed November 21, 2024. https://journal2.unusa.ac.id/index.php/AMJ/article/view/2137.