Diana, Ditha, Bastaman Basuki, and Jull Kurniarobbi. “Low Physical Activity Work-Related and Other Risk Factors Increased the Risk of Poor Physical Fitness in Cement Workers”. Medical Journal of Indonesia 18, no. 3 (August 1, 2009): 203-7. Accessed May 26, 2024. https://mji.ui.ac.id/journal/index.php/mji/article/view/362.