A. Kahar, I. Isumarni, N. Nurlaelah, S. Khalik, S. Hermansyah, and U. M, “Enhancing student character through collaborative learning: a qualitative study on the contribution of university students at SMP Muhammadiyah Pangsid”, edumaspul, vol. 9, no. 2, pp. 1386-1395, Oct. 2025.