Y. Murni, M. Makomulamin, and B. Lapau, “Relationship Training and Supervision with at Risk Behavior on Dump Truck’s Driver: Hubungan Pelatihan Dan Pengawasan Dengan At Risk Behavior Pada Pengemudi Mobil Sampah ”, J Keskom, vol. 5, no. 1, pp. 19–22, Apr. 2019.