Siagian, Nurul, Mardianto, and Nasrun Salim Siregar. “Efektivitas Program Student Creativity Dalam Membentuk Karakter Islami Siswa SMP Muhammadiyah 1 Medan”. Indonesian Journal of Islamic Education 2, no. 2 (August 20, 2024): 124–131. Accessed May 1, 2025. https://www.ejournal.unma.ac.id/index.php/ijie/article/view/10742.