Singh, S. (1999). code book: The science of secrecy from ancient Egypt to quanttum cryptography. Anchor Books.
Čikaški stil citiranjaSingh, Simon. Code Book: The Science of Secrecy from Ancient Egypt to Quanttum Cryptography. New York: Anchor Books, 1999.
MLA način citiranjaSingh, Simon. Code Book: The Science of Secrecy from Ancient Egypt to Quanttum Cryptography. Anchor Books, 1999.
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