MYCZKO, K. Zu Problemen des frühen Fremdsprachenunterrichts. Studia Germanica Posnaniensia, [S. l.], v. 26, p. 199–210, 2018. DOI: 10.14746/sgp.2000.26.13. Disponível em: https://pressto.amu.edu.pl/index.php/sgp/article/view/14806. Acesso em: 25 wrz. 2023.