Hapsari, A., D. Erwandi, and Y. D. Ardyanto. “Correlation Between Company’s Lock Out Tag Out (LOTO) System With LOTO Implementation Behavior of Mechanic in Plant Department”. KnE Life Sciences, Vol. 4, no. 5, June 2018, pp. 146–158, doi:10.18502/kls.v4i5.2548.