LEAF, J. B.; CIHON, J. H.; LEAF, R.; MCEACHIN, J.; TAUBMAN, M. A progressive approach to discrete trial teaching: Some current guidelines. International Electronic Journal of Elementary Education, [S. l.], v. 9, n. 2, p. 361–372, 2017. Disponível em: https://iejee.com/index.php/IEJEE/article/view/163. Acesso em: 21 jan. 2025.