“KAJIAN TARIF ANGKUTAN UMUM SELAM MASA PANDEMI COVID 19: STUDI KASUS BUS TRAYEK TONDANO MANADO SULAWESI UTARA ”. Sustainable Construction (SUSCON) 1, no. 2 (August 20, 2023): 139 149. Accessed December 29, 2025. https://ejurnal.unima.ac.id/index.php/suscon/article/view/8063.