Epçaçan, Cahit. “THE EVALUATION OF THE INVALIDATED GUIDEBOOKS IN ACCORDANCE WITH TEACHERS’ OPINIONS”. International Online Journal of Education and Teaching 9, no. 4 (October 1, 2022): 1444–1457. Accessed January 11, 2026. https://www.iojet.org/index.php/IOJET/article/view/1604.