H. Ahmad, S. E. Mokshein, M. R. Husin, I. Y. Panessai, M. N. M. Zabita, and N. H. C. M. Ghazali, “Validation of The Academic Success Instrument Using Polytomous Item Response Theory”, Psychosocial rehabilitation, vol. 24, no. 9, pp. 2081–2085, Nov. 2020, doi: 10.61841/6r9w1v34.