A. Yacob and  N. Hj. Ali and  M. H. Yusoff and  M. Y. MohdSaman and  W. M. A. F. W. Hamzah,  Personalized Learning:  An Analysis Using Item Response Theory.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2014, vol. 88(4). 1107 - 1113
    [viewed 25 October 2021]. Available from: https://publications.waset.org/pdf/9998019.