ÇETİNKAYA, G., YENMEZ, A. A., ÇELİK, T. and ÖZPINAR, İlknur (2018) “Readability of Texts in Secondary School Mathematics Course Books”, Asian Journal of Education and Training, 4(4), pp. 250–256. doi: 10.20448/journal.522.2018.44.250.256.