ONDER, A.; BALABAN DAGAL, A.; ILCI KUSMUS, G.; BILICI, H.; OZDEMIR, H.; KAYA DEGER, Z. An investigation of visual perception levels of pre-school children in terms of different variables. International Online Journal of Education and Teaching, [S. l.], v. 6, n. 1, p. 190–203, 2019. Disponível em: https://iojet.org/index.php/IOJET/article/view/384. Acesso em: 8 jan. 2026.