ARIAS, R.; DUQUE, A.; MITCHELL, Y. Acquisition of a foreign language by solving communication problems. Íkala, Revista de Lenguaje y Cultura, [S. l.], v. 2, n. 1-2, p. 45–56, 1997. DOI: 10.17533/udea.ikala.8043. Disponível em: https://revistas.udea.edu.co/index.php/ikala/article/view/8043. Acesso em: 5 feb. 2025.