Wirani, Ayu, Octoberry Julyanto, Dwi Kartini, and Mukhlasin Mukhlasin. 2022. “The Effect of Work Shift on Mental Workload of Maintenance Operator Using Nasa Task Load Index (TLX)”. Journal of Industrial Engineering & Management Research 3 (3), 271-76. https://doi.org/10.7777/jiemar.v3i3.363.