Panday, R., S. Mardiah, M. F Nursal, A. Wibowo, and D. Setyawan. “Hazard Identification, Risk Assessment and Risk Control in Chemical Industry”. Proceeding Interuniversity Forum for Strengthening Academic Competency, Vol. 1, no. 1, May 2019, pp. 353 -59, https://proceedings.conference.unpas.ac.id/index.php/ifsac/article/view/186.