VETTOREL, Paola; LOPRIORE, Lucilla. Is there ELF in ELT coursebooks?. Studies in Second Language Learning and Teaching, [S. l.], v. 3, n. 4, p. 483–504, 2013. DOI: 10.14746/ssllt.2013.3.4.3. Disponível em: https://pressto.amu.edu.pl/index.php/ssllt/article/view/5024. Acesso em: 4 may. 2024.