Singh, S. (2000). The code book: The science of secrecy from ancient Egypt to quantum cryptography (First Anchor Books edition.). Anchor Books.
Lua i Stíl Chicago (17ú heag.)Singh, Simon. The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography. First Anchor Books edition. New York: Anchor Books, 2000.
Lua MLA (8ú heag.)Singh, Simon. The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography. First Anchor Books edition. Anchor Books, 2000.
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