@book{ 0-1329768426, title = {Aspekte: Mittelstufe Deutsch}, author = {Koithan, Ute}, editor = {Koithan, Ute}, address = {Berlin}, publisher = {Langenscheidt}, year = {2007}, language = {German}, url = {https://katalog.hgb-leipzig.de/Record/0-1329768426} }