Nurahma, Asti Puspita, Indriati Paskarini, Endang Dwiyanti, and Sahabat Sutanto. 2022. “The Relationship Between Mental Workload and Sleep Quantity With Work Fatigue Among Haul Dump Truck Operators in Coal Mining”. The Indonesian Journal of Occupational Safety and Health 11 (3):333-42. https://doi.org/10.20473/ijosh.v11i3.2022.333-342.