Utami, Eva Yuniarti, Syamsu Rijal, and Baso Iwang , trans. “Application of Lean Manufacturing Principles in Increasing Factory Productivity”. West Science Journal Economic and Entrepreneurship 1, no. 10 (October 31, 2023): 450–456. Accessed December 7, 2025. https://wsj.westsciences.com/index.php/wsee/article/view/290.