Sarwat, D. S. ., M. W. . Shahzad, and M. S. . Javed. “An Introduction to Pronunciation Issues at Secondary Level in ESL Learners”. Pakistan Journal of Languages and Translation Studies, vol. 9, no. 1, June 2021, pp. 1-11, https://pjlts.uog.edu.pk/index.php/pjlts/article/view/2.