Citazione Stile APA (7a Edizione)

Erzner, F. (2010). Around the World - Geographie (New edition.). Cornelsen.

Citazione stile Chigago Style (17a edizione)

Erzner, Frank. Around the World - Geographie. New edition. Berlin: Cornelsen, 2010.

Citatione MLA (9a ed.)

Erzner, Frank. Around the World - Geographie. New edition. Cornelsen, 2010.