Kahn, D. (1967). The codebreakers: The story of secret writing. New York: The Macmillan Company.
Citación estilo ChicagoKahn, David. The Codebreakers: The Story of Secret Writing. New York: The Macmillan Company, 1967.
Cita MLAKahn, David. The Codebreakers: The Story of Secret Writing. New York: The Macmillan Company, 1967.
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