Atep Afia Hidayat, IndraAlmahdy, Alfa Firdaus, Muhammad Kholil, Jakfat Haekal, Tri Widodo, and Dede Rukmayadi. “Quality Control Analysis of Piston Gasoline Products Using the DMAIC Approach”. International Journal of Scientific and Academic Research (IJSAR), eISSN: 2583-0279 4, no. 1 (January 24, 2024): 9–16. Accessed May 10, 2024. https://ijsar.net/index.php/ijsar/article/view/109.