APA (7th ed.) Citation

Romberg, O. R. (1989). Widerstand und Exil: 1933 - 1945.

Chicago Style (17th ed.) Citation

Romberg, Otto R. Widerstand Und Exil: 1933 - 1945. Bonn, 1989.

MLA (8th ed.) Citation

Romberg, Otto R. Widerstand Und Exil: 1933 - 1945. 1989.

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