VASSALLO, Maria Luisa; TELLES, João A. Foreign Language Learning In-Tandem: Theoretical Principles and Research Perspectives. The ESPecialist, [S. l.], v. 27, n. 1, 2011. Disponível em: https://revistas.pucsp.br/index.php/esp/article/view/6117. Acesso em: 5 dec. 2025.