Sisca B. Kairupan, Jeane Mantiri, & Margareth I. R Rantung. (2021). The Effectiveness of Motor Vehicle Tax Certificate Management Services during the Covid 19 Pandemic at the SAMSAT Office of Minahasa Regency. ICHELSS: International Conference on Humanities, Education, Law, and Social Sciences, 1(1), 605-609. Retrieved from http://103.8.12.212:33180/unj/index.php/hispisi/article/view/22326