Sudiarno, Adithya, and Nadira Putri Maharani. “A Conceptual Framework for Analyzing Occupational Safety and Health Program Investment: Hierarchy of Controls-Based Approach”. The Indonesian Journal of Occupational Safety and Health 13, no. 2 (August 30, 2024): 201–212. Accessed February 5, 2025. https://e-journal.unair.ac.id/IJOSH/article/view/54602.