Bozkus, Kivanc. “DIGITAL DEVICES AND STUDENT ACHIEVEMENT: THE RELATIONSHIP IN PISA 2018 DATA”. International Online Journal of Education and Teaching 8, no. 3 (July 1, 2021): 1560–1579. Accessed December 24, 2025. https://iojet.org/index.php/IOJET/article/view/1255.