Fitri, Sari Delima, Dina Lusiana Setyowati, and Krispinus Duma. 2019. “Implementation of Risk Management Based on ISO 31000: 2009 in the Machine Maintenance Program at PT. X”. Faletehan Health Journal 6 (1):16-24. https://doi.org/10.33746/fhj.v6i1.40.