HEER, N. Innovation - Tradition - Praxistauglichkeit: Lehrmittelkonzeptionen und ihre Grenzen. Babylonia Journal of Language Education, [S. l.], v. 1, p. 8–11, 2026. DOI: 10.55393/babylonia.v1i.1211. Disponível em: https://babylonia.online/index.php/babylonia/article/view/1211. Acesso em: 1 may. 2026.