APA Edition Citation

Kippenhahn, R. (1999). Code breaking: A history and exploration. Universities press.

Chicago Edition Citation

Kippenhahn, Rudolf. Code Breaking: A History and Exploration. Hyderabad: Universities press, 1999.

MLA Edition Citation

Kippenhahn, Rudolf. Code Breaking: A History and Exploration. Universities press, 1999.

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