Onder, A., Balaban Dagal, A., Ilci Kusmus, G., Bilici, H., Ozdemir, H. and Kaya Deger, Z. (2019) “An investigation of visual perception levels of pre-school children in terms of different variables”, International Online Journal of Education and Teaching, 6(1), pp. 190–203. Available at: https://iojet.org/index.php/IOJET/article/view/384 (Accessed: 8 January 2026).