APA (7th ed.) Citation

Urban, M. (2001). The man who broke Napoleon's codes. HarperCollins.

Chicago Style (17th ed.) Citation

Urban, Mark. The Man Who Broke Napoleon's Codes. New York: HarperCollins, 2001.

MLA (9th ed.) Citation

Urban, Mark. The Man Who Broke Napoleon's Codes. HarperCollins, 2001.

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