Alpi, M. Firza, Januri Januri, and Puja Rizqy Ramadhan. “Determinants of Toll Revenues: The Case of PT. Jasa Marga (Belmera Branch) Medan”. Proceeding UII-ICABE 1, no. 1 (February 18, 2020): 355–364. Accessed May 6, 2024. https://journal.uii.ac.id/icabe/article/view/14815.