A. Kurniawan, H. V. Paramarta, and S. R. Mulyani, “Analysis of Occupational Safety and Health (K3) Competency of Outsourced Workers on Employee Performance: Implications for Occupational Accident Risk Control (Survey Study at PT PLN Nusantara Power Unit Generation in Central Kalimantan)”, DIJEFA, vol. 6, no. 6, pp. 5799–5814, Jan. 2026.