Mikhael Sihombing, Farihah and Efendi Napitupulu (2018) “Study of effectiveness of Multimedia-Based Interactive Learning at Nila Harapan Deli Serdang Vocational High School”, International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, 4(1), pp. 112–117. doi: 10.7324/IJASRE.2018.32598.