A.-D. H. Khlebus and U. P. D. E. Vrasmas, “Developing the Listening Ability of Students”, IJSBAR, vol. 35, no. 3, pp. 194–198, Aug. 2017, Accessed: Oct. 13, 2025. [Online]. Available: https://gssrr.org/JournalOfBasicAndApplied/article/view/7941