JOHNSON, W. L.; VALENTE, A. Tactical Language and Culture Training Systems: Using AI to Teach Foreign Languages and Cultures. AI Magazine, [S. l.], v. 30, n. 2, p. 72, 2009. DOI: 10.1609/aimag.v30i2.2240. Disponível em: https://ojs.aaai.org/index.php/aimagazine/article/view/2240. Acesso em: 29 jun. 2022.