Publisher: Cornelsen
Classbook – ISBN: 978-3-06-120482-2
Workbook – ISBM: 978-3-06-120560-7
Classbook & Workbook Combined – ISBN: 978-3-06-121084-7
Publisher: Cornelsen
Classbook – ISBN: 9783061204723
Classbook & Workbook Combined – ISBN: 978-3-06-120300-9