Sisca B. Kairupan, Jeane Mantiri and 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), pp. 605-609. Available at: http://103.8.12.212:33180/unj/index.php/hispisi/article/view/22326 (Accessed: 15April2026).