ÖZMEN, E. Rüya; ATBAŞI, Zehra. Identifying interventions for improving letter formation: A brief experimental analysis of students with intellectual disabilities. International Electronic Journal of Elementary Education, [S. l.], v. 9, n. 1, p. 197–209, 2017. Disponível em: https://www.iejee.com/index.php/IEJEE/article/view/152. Acesso em: 4 aug. 2026.