Novandhini, D. R., M. A. Mahfudz, and I. Paskarini. “Risk Management in Work Activities at Ammonia Plant Fertilizer Production Industry”. The Indonesian Journal of Occupational Safety and Health, vol. 9, no. 2, Aug. 2020, pp. 196-04, doi:10.20473/ijosh.v9i2.2020.196-204.