APA (7th ed.) Citation

Obermann, H. (2008). Terra - GWG, Geographie, Wirtschaft (Gymnasium, Baden-Württemberg.). Klett.

Chicago Style (17th ed.) Citation

Obermann, Helmut. Terra - GWG, Geographie, Wirtschaft. Gymnasium, Baden-Württemberg. Stuttgart: Klett, 2008.

MLA (9th ed.) Citation

Obermann, Helmut. Terra - GWG, Geographie, Wirtschaft. Gymnasium, Baden-Württemberg. Klett, 2008.

Warning: These citations may not always be 100% accurate.