ZENDEROWSKA-KORPUS, Grażyna. A hard nut to crack. Idioms in teaching German as a foreign language. Glottodidactica, [S. l.], v. 36, p. 83–94, 2010. DOI: 10.14746/gl.2010.36.07. Disponível em: https://pressto.amu.edu.pl/index.php/gl/article/view/15962. Acesso em: 14 apr. 2026.