Sitohang, Oloan, Febby Yola Lumban Tobing, and Reynaldo Siahaan. “Kinerja Operasional Kereta Api Siantar Ekspres Rute Medan - Pematang Siantar Menurut Penumpang Masa Pasca Pandemi Covid-19”. Jurnal Rekayasa Konstruksi Mekanika Sipil (JRKMS) 7, no. 2 (November 7, 2024): 81–91. Accessed December 22, 2024. https://ejournal.ust.ac.id/index.php/JRKMS/article/view/4068.