Astutik, Mardi, and Retno Catur Kusuma Dewa. “engaruh eselamatan an esehatan erja (K3) an ingkungan erja erhadap roduktivitas erja aryawan”. MBR (Management and Business Review) 3, no. 1 (June 28, 2019): 1–8. ccessed July 22, 2024. http://ejournal.unikama.ac.id/index.php/mbr/article/view/4617.