Muhammad Junaid Zafar, Malaika Sarfaraz Khan, Qura-Tul-Ain Sajjad, and Robina Shakil, “A COMPARATIVE ANALYSIS OF DUOLINGO AND BABBEL IN ENHANCING UNDERGRADUATE STUDENTS’ LANGUAGE COMPREHENSION: A USES AND GRATIFICATIONS THEORY PERSPECTIVE”, IPJLL, vol. 4, no. 3 (s2), pp. 540–554, May 2026, Accessed: Jul. 27, 2026. [Online]. Available: https://ipjll.com/ipjll/index.php/journal/article/view/672