Safitri, Revy. 2016. “EVALUASI TARIF ANGKUTAN UMUM BERDASARKAN ABILITY TO PAY (ATP) DAN WILLINGNESS TO PAY (WTP) DI KOTA PANGKALPINANG”. FROPIL (Forum Profesional Teknik Sipil) 4 (2), 156-64. https://doi.org/10.33019/fropil.v4i2.1245.