Pratama, Flandi Tito, and Rudy Santosa. “Evaluasi Kinerja Dan Analisa Benefit Cost Ratio Berdasarkan Biaya Operasional Kereta Api Maharani Rute Surabaya – Semarang ”. CONCRETE: Construction and Civil Integration Technology 1, no. 01 (May 25, 2023): 60-69. Accessed May 5, 2024. https://ejournal.unitomo.ac.id/index.php/concrete/article/view/6087.