Alqahtani, Mohammed, and Teg Alam. “Integrating Six Sigma Principles towards Multi-Objective Production Planning for Enhanced Quality in the Al Kharj Manufacturing Sector”. Engineering, Technology & Applied Science Research 14, no. 6 (December 2, 2024): 18544–18549. Accessed January 21, 2025. https://etasr.com/index.php/ETASR/article/view/8905.