Mujib, Ahmad, and Ahmad Bashori. “The Problems of Teaching Qowaid Shorf for Students of the Arabic Language Department at the Islamic State University of Ponorogo”. Tsaqofiya : Jurnal Pendidikan Bahasa Dan Sastra Arab, vol. 2, no. 1, Jan. 2020, pp. 56-70, https://doi.org/10.21154/tsaqofiya.v2i1.16.