“ADAPTIVE LEARNING SYSTEMS FOR LANGUAGE PROFICIENCY DEVELOPMENT IN HIGHER EDUCATION: A SYSTEMATIC LITERATURE REVIEW”, iijp, vol. 2, no. issue 2, pp. 567–580, Apr. 2026, Accessed: Jun. 25, 2026. [Online]. Available: https://impactinternationaljournals.com/publications/index.php/ojs/article/view/408