JOHNSON, C.; ROESSINGH, H. Teacher Prepared Materials: A Principled Approach. TESL Canada Journal, [S. l.], v. 22, n. 1, p. 44–63, 2004. DOI: 10.18806/tesl.v22i1.165. Disponível em: https://teslcanadajournal.ca/index.php/tesl/article/view/165. Acesso em: 4 dec. 2021.