O'GRADY, William D.; GIBBONS, Diana E. On the Nature of Pre-Literate Spelling Ability. Kansas Working Papers in Linguistics, [S. l.], v. 6, p. 71–79, 1981. DOI: 10.17161/KWPL.1808.556. Disponível em: https://journals.ku.edu/kwpl/article/view/17328.. Acesso em: 5 may. 2024.