Maiton, Chanikaporn, and Nivit Charoenchai. “Risk Assessment in Lifting Task in the Squat Toilet Production”. Thai Industrial Engineering Network Journal 1, no. 1 (January 19, 2015): 31–36. accessed September 11, 2026. https://ph02.tci-thaijo.org/index.php/ienj/article/view/179134.