APA (7e ed.) Bronvermelding

Kahn, D. (1967). The codebreakers: The story of secret writing (First edition.). The Macmillan Company.

Chicago (17e ed.) Bronvermelding

Kahn, David. The Codebreakers: The Story of Secret Writing. First edition. New York: The Macmillan Company, 1967.

MLA (8e ed.) Bronvermelding

Kahn, David. The Codebreakers: The Story of Secret Writing. First edition. The Macmillan Company, 1967.