Supriadi Cerdas Zalukhu, Evi Susilawati, Sapta Kesuma, and Yusnita Muslim. “Pengaruh Penggunaan Smartphone Terhadap Kedisiplinan Dan Kualitas Belajar Peserta Didik Kelas X-9 Di Sekolah SMA Negeri 13 Medan”. Journal of Mandalika Literature 5, no. 4 (December 16, 2024): 1125-1130. Accessed January 31, 2025. https://ojs.cahayamandalika.com/index.php/jml/article/view/3732.