Yusnaldi, E., H. Siregar, M. Damanik, W. Iskandar, and M. Yusuf. “Implementation of Islamic Education Curriculum in Muhammadiyah 3 Basic School Padang Sidempuan”. SYAMIL: Journal of Islamic Education, Vol. 8, no. 2, Dec. 2020, pp. 135-5, doi:10.21093/sy.v8i2.1991.