Adolof Piero Tatipang, Nicky Willem Rampengan, and Toar U. Y. Pangkey. 2023. “KAJIAN TARIF ANGKUTAN UMUM SELAM MASA PANDEMI COVID-19: ( STUDI KASUS BUS TRAYEK TONDANO MANADO – SULAWESI UTARA )”. Sustainable Construction (SUSCON) 1 (2):139-49. https://ejurnal.unima.ac.id/index.php/suscon/article/view/8063.