Wrixon, F. B. (1998). Codes, ciphers, & other cryptic & clandestine communication: Making and breaking secret messages from hieroglyphs to the internet. Black Dog & Leventhal.
Chicago-Zitierstil (17. Ausg.)Wrixon, Fred B. Codes, Ciphers, & Other Cryptic & Clandestine Communication: Making and Breaking Secret Messages from Hieroglyphs to the Internet. New York: Black Dog & Leventhal, 1998.
MLA-Zitierstil (9. Ausg.)Wrixon, Fred B. Codes, Ciphers, & Other Cryptic & Clandestine Communication: Making and Breaking Secret Messages from Hieroglyphs to the Internet. Black Dog & Leventhal, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.