APA (7th ed.) Citation

Dege, W. (1972). Das Ruhrgebiet. Vieweg.

Chicago Style (17th ed.) Citation

Dege, Wilhelm. Das Ruhrgebiet. Braunschweig: Vieweg, 1972.

MLA (9th ed.) Citation

Dege, Wilhelm. Das Ruhrgebiet. Vieweg, 1972.

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