Jauhari, Muhammad Amin. “Analysis on Factors Causing Fatigue Among Steel Casting Workers at PT X Sidoarjo”. The Indonesian Journal of Occupational Safety and Health 8, no. 2 (August 30, 2019): 224–232. Accessed November 22, 2024. https://e-journal.unair.ac.id/IJOSH/article/view/8889.