SHARMA, L. R. Analysis of Difficulty Index, Discrimination Index and Distractor Efficiency of Multiple Choice Questions of Speech Sounds of English. International Research Journal of MMC, [S. l.], v. 2, n. 1, p. 15–28, 2021. DOI: 10.3126/irjmmc.v2i1.35126. Disponível em: https://www.nepjol.info/index.php/irjmmc/article/view/35126. Acesso em: 21 sep. 2021.