EVALUASI TARIF ANGKUTAN UMUM BERDASARKAN ABILITY TO PAY (ATP) DAN WILLINGNESS TO PAY (WTP) DI KOTA PANGKALPINANG. FROPIL (Forum Profesional Teknik Sipil) 2016, 4 (2), 156-164. https://doi.org/10.33019/fropil.v4i2.1245.