Salleh, Rohayu Mohd, Ng Jin Chuan, and Sabariah Saharan. “Monitoring Process Variability and Root Cause Analysis in Paper Box Production”. International Journal of Engineering and Technology 7, no. 4.30 (November 30, 2018): 492–497. Accessed April 12, 2025. https://sciencepubco.com/index.php/IJET/article/view/22377.