“Analisis Tingkat Konsentrasi Belajar Siswa Akibat Penggunaan Gadget Di SMA Methodist 7 Medan, Jl. Madong Lubis No. 7 Medan”. Jurnal Intelek Insan Cendikia 2, no. 6 (June 9, 2025): 11658–11665. Accessed July 11, 2026. https://jicnusantara.com/index.php/jiic/article/view/3802.