CORBY, K. Snowball, Diane & Bolton, Faye (1999). Spelling K-8: Planning and Teaching. York Harbor, ME: Stenhouse. Education Review, [S. l.], 2015. DOI: 10.14507/er.v0.88. Disponível em: https://edrev.asu.edu/index.php/ER/article/view/88. Acesso em: 5 may. 2024.