EPÇAÇAN, C. THE EVALUATION OF THE INVALIDATED GUIDEBOOKS IN ACCORDANCE WITH TEACHERS’ OPINIONS . International Online Journal of Education and Teaching, [S. l.], v. 9, n. 4, p. 1444–1457, 2022. Disponível em: https://www.iojet.org/index.php/IOJET/article/view/1604. Acesso em: 11 jan. 2026.