Nursabrina, A. “Risk Management in Hazardous and Toxic Waste Management Companies Using the HIRA (Hazard Identification and Risk Assessment) Method at PT.XY Batam City”. International Journal of Health, Education & Social (IJHES), Vol. 4, no. 12, Dec. 2021, pp. 1-12, doi:10.1234/ijhes.v4i12.208.