Aksu, Gokhan, Cigdem Reyhanlıoglu, and Mehmet Taha Eser. 2017. “Examining the Two Categorical Datas by Jmetrik, Bilog-Mg and Irtpro With Application of Mathematics Exam”. European Scientific Journal, ESJ 13 (33), 20. https://doi.org/10.19044/esj.2017.v13n33p20.