Epstein, S., & Epstein, B. W. (1956). The first book of codes and ciphers. New York: Franklin Watts.
Chicago Style CitationEpstein, Sam., and Beryl Williams Epstein. The First Book of Codes and Ciphers. New York: Franklin Watts, 1956.
MLA CitationEpstein, Sam., and Beryl Williams Epstein. The First Book of Codes and Ciphers. New York: Franklin Watts, 1956.
Warning: These citations may not always be 100% accurate.