@book{ 0-1580738508, title = {Arbeitsheft: 35 Blatt, A4 = Workbook}, author = {Ziegler, Ella}, address = {}, publisher = {}, year = {2010}, language = {German}, language = {English}, note = {Text dt. und engl}, url = {https://katalog.gfzk.de/Record/0-1580738508} }