Ningtyas, E. C. and Lbs, S. A. (2023) “PENGARUH SMARTPHONE DAN GAME ONLINE TERHADAP PROBLEMATIKA AKHLAK DAN HASIL BELAJAR SISWA SMK SINAR HUSNI MEDAN”, Journal of Education Research, 4(3), pp. 1285–1298. doi: 10.37985/jer.v4i3.313.