KOSTRZEWA, Frank. Der Relativsatz im Sprachkontrast. Studia Germanica Gedanensia, [S. l.], n. 37, p. 63–70, 2017. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/SGG/article/view/1301. Acesso em: 12 maj. 2025.