Rezkilaturahmi R, Istiyono E, Widihastuti W, Istiqlal M, Ndayizeye O, Pelila JRO, et al. A Classical Test Theory Analysis of an English Achievement Test. Ind. J. App.Sci. Eng [Internet]. 2026 Oct. 25 [cited 2026 Nov. 9];5(1):1-15. Available from: https://e-journal.ptti.info/index.php/ijase/article/view/181