Hidayat, Nasrul, and Riki Ridwan Margana. 2025. “Analisis Penyebab Keterlambatan Hasil Pengujian Bahan Baku Dengan Metode Lean Six Sigma”. Journal of Industrial Science and Mechanical Engineering 1 (1):124-34. https://journal.widyatama.ac.id/index.php/jisme/article/view/3047.