Ningtyas, Endah Cahya, and Saiful Akhyar Lbs. “PENGARUH SMARTPHONE DAN GAME ONLINE TERHADAP PROBLEMATIKA AKHLAK DAN HASIL BELAJAR SISWA SMK SINAR HUSNI MEDAN”. Journal of Education Research 4, no. 3 (August 30, 2023): 1285–1298. Accessed March 15, 2025. https://jer.or.id/index.php/jer/article/view/313.