Luqmantoro, Luqmantoro. “PENERAPAN CONTRACTOR SAFETY MANAGEMENT SYSTEM PADA PT JAMIN JAYA ABADI DI BALIKPAPAN”. IDENTIFIKASI 4, no. 1 (November 26, 2018): 11–21. Accessed May 6, 2024. http://jurnal.d4k3.uniba-bpn.ac.id/index.php/identifikasi/article/view/43.