Ridwan, M. Rais, Samsul Hadi, and Faihatuz Zuhairoh. 2025. “Analysis of Differential Item Functioning on Students’ Mathematical Problem-Solving Ability Assessment Instruments”. Edumatica : Jurnal Pendidikan Matematika 15 (2):176-97. https://doi.org/10.22437/edumatica.v15i2.44361.