Klima, R. E., & Sigmon,Neil P. (2013). Cryptology classical and modern with maplets.
Chicago Edition CitationKlima, Richard E., and Sigmon,Neil P. Cryptology Classical and Modern with Maplets. Taylor & Francis Group LLC, 2013.
MLA Edition CitationKlima, Richard E., and Sigmon,Neil P. Cryptology Classical and Modern with Maplets. 2013.
Warning: These citations may not always be 100% accurate.