Alhajory, Easa Salamah bin Sabyan. “Using IRT in Estimate Psychometric Characteristics of the Central Science Test for the Third Intermediate Grade in Al-Madinah Al-Munawara’s Schools”. Journal of Educational and Psychological Sciences, vol. 4, no. 14, Apr. 2020, pp. 99-75, https://doi.org/10.26389/AJSRP.E220719.