Murni, Yetti, Makomulamin Makomulamin, and Buchari Lapau. “Relationship Training and Supervision With at Risk Behavior on Dump Truck’s Driver”. Jurnal Kesehatan Komunitas 5, no. 1 (April 23, 2019): 19-22. Accessed November 22, 2019. http://jurnal.htp.ac.id/index.php/keskom/article/view/177.