ALIJOYO, Antonius; VORST, Charles R. Measuring And Improving The Effectiveness Of ISO 31000 Based Erm In State-Controlled PSO - A Case Study Of Toll Road Operators In Indonesia. International Journal of Environmental, Sustainability, and Social Science, [S. l.], v. 3, n. 1, p. 65–71, 2022. DOI: 10.38142/ijesss.v3i1.159. Disponível em: https://staging.journalkeberlanjutan.com/index.php/ijesss/article/view/159. Acesso em: 6 jun. 2026.