APA (7th ed.) Citation

Royce, H. (1953). 20. Juli 1944. Köllen.

Chicago Style (17th ed.) Citation

Royce, Hans. 20. Juli 1944. Bonn: Köllen, 1953.

MLA (8th ed.) Citation

Royce, Hans. 20. Juli 1944. Köllen, 1953.

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