Hutabarat, Pelita, dkk. “DEVELOPING AUDIO-VISUAL MEDIA BY USING VIDEOPAD FOR TEACHING WRITING TO XI GRADE STUDENTS OF SMA N 11 MEDAN”. TRANSFORM: Journal of English Language Teaching and Learning, vol. 8, no. 1, Agustus 2020, https://doi.org/10.24114/tj.v8i1.19641.