Djalilah, G. N., Oktaviyanti, L. D., Prasetya, E. C., Indrawati, N. D., & Nugraha, A. S. (2024). The relationship between smartphone addiction and insomnia among medical students at Muhammadiyah University of Surabaya. Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya, 8(02). https://doi.org/10.30651/jqm.v8i02.22069