BIAŁEK, M. Communication potential of textbooks for learning a foreign language on the example of German language. Linguodidactica, [S. l.], v. 21, p. 39–58, 2017. DOI: 10.15290/lingdid.2017.21.03. Disponível em: https://czasopisma.filologia.uwb.edu.pl/index.php/l/article/view/424. Acesso em: 22 dec. 2024.