Elsaghier, Mahmoud Ali, Adell Saleh Amer, Rania Ahmed Elrifai, and Elgnidi Hisain Elsghier. “Six Sigma Roles for the Improvement of Company Manufacturing Processes and Waste Reduction”. Journal of Academic Research 29, no. 2 (July 1, 2025): 50–61. Accessed October 16, 2026. https://lam-journal.ly/index.php/jar/article/view/1248.