Cita APA (7a ed.)

Kahn, D. (1967). The codebreakers: : the story of secret writing. MacMillan.

Cita Chicago Style (17a ed.)

Kahn, David. The Codebreakers: : The Story of Secret Writing. New York: MacMillan, 1967.

Cita MLA (9a ed.)

Kahn, David. The Codebreakers: : The Story of Secret Writing. MacMillan, 1967.