Karabıyık, Ceyhun. “THE RELATIONSHIP BETWEEN STUDENT ENGAGEMENT AND TERTIARY LEVEL ENGLISH LANGUAGE LEARNERS’ ACHIEVEMENT”. International Online Journal of Education and Teaching 6, no. 2 (April 5, 2019): 281–293. Accessed January 1, 2026. https://iojet.org/index.php/IOJET/article/view/590.