Simanjuntak, Johan, Nurvita Insani Simanjuntak, & Sonnya Cindy H. " ANALISIS TARIF ANGKUTAN UMUM BERDASARKAN BIAYA OPERASIONAL KENDARAAN, ABILITY TO PAY DAN WILLINGNESS TO PAY." Jurnal Darma Agung [Online], 32.1 (2024): 247-254. Web. 21 Nov. 2024