Sofwan, Muhammad, Jajan Rohjan, and Reza M Surdia. “Kajian Tarif Angkutan Penumpang Yang Layak Bus Trans Metro Pekanbaru”. JURNAL SAINTIS 17, no. 1 (April 1, 2017): 84–99. Accessed June 24, 2026. https://journal.uir.ac.id/index.php/saintis/article/view/1770.