Uzma, F. M., and A. Z. Fakhiroh. “An Effort for Improving 2K Students’ Learning Achievement of Hadits Subject Using Reward and Punishment Method in Gontor for Girls”. Educan : Jurnal Pendidikan Islam, vol. 2, no. 1, Feb. 2018, pp. 57-74, doi:10.21111/educan.v2i1.1987.