Guntur, M., Widorisnomo Widorisnomo, and Subarto Subarto. “PENIADAAN SENIORITAS (SDM) PENGARUHNYA TERHADAP PELAYANAN JASA PERKERETAAPIAN”. Jurnal Penelitian Sekolah Tinggi Transportasi Darat 6, no. 1 (November 8, 2015): 35 - 45. Accessed July 4, 2026. http://114.141.51.86/index.php/jpsttd/article/view/72.