" Singh, S. The code book: The secret history of codes and code-breaking. Forth Estate Ltd.
Chicago Style (17th ed.) Citation" Singh, Simon". The Code Book: The Secret History of Codes and Code-breaking. Forth Estate Ltd.
MLA (9th ed.) Citation" Singh, Simon". The Code Book: The Secret History of Codes and Code-breaking. Forth Estate Ltd.
Warning: These citations may not always be 100% accurate.