SZCZODROWSKI, Marian. The Essence, Types and Effects of Foreign Language Control Systems. Glottodidactica, [S. l.], v. 35, p. 9–23, 2009. DOI: 10.14746/gl.2009.35.1. Disponível em: https://pressto.amu.edu.pl/index.php/gl/article/view/16446. Acesso em: 7 dec. 2025.