Pulungan, R. ., and H. Syarif. “Ability to Learn Indonesian Language Through Online Zoom Application System in SMP Negeri 14 Medan”. Proceeding of International Conference on Language Pedagogy (ICOLP), vol. 1, no. 1, Dec. 2021, pp. 196-01, doi:10.24036/icolp.v1i1.40.