VOERKEL, Paul. Sustainability in foreign language teaching: a current and necessary approach. MATRAGA - Journal published by the Graduate Program in Letters at Rio de Janeiro State University (UERJ), Rio de Janeiro, v. 31, n. 61, p. 37–54, 2024. DOI: 10.12957/matraga.2024.80010. Disponível em: https://www.e-publicacoes.uerj.br/matraga/article/view/80010. Acesso em: 4 oct. 2025.