Rohmatdi, Agus, et al. “Optimizing Question Quality in Junior High School Exams: Classical Test Theory Evaluation With ITEMAN 4.3”. AL-ISHLAH: Jurnal Pendidikan, vol. 16, no. 4, Oct. 2024, pp. 4363-75, doi:10.35445/alishlah.v16i4.5671.