“Implementasi Kebijakan Pengumpulan Handphone Pra-KBM: Studi Kasus Manajemen Kedisiplinan dan Kendala Operasional di Madrasah Aliyah Laboratorium UINSU Medan”, Sindoro, vol. 18, no. 10, Sep. 2026, Accessed: Oct. 17, 2026. [Online]. Available: https://journal.cib.institute/index.php/sindoro/article/view/4682