YoviE. Y., YamadaY., ZainiM. F., KusumadewiC. A. Y., and MarisianaL. “Improving the OSH Knowledge of Indonesian Forestry Workers by Using Safety Game Application: Tree Felling Supervisors and Operators”. Jurnal Manajemen Hutan Tropika, Vol. 22, no. 1, May 2016, p. 75, doi:10.7226/jtfm.22.1.75.