Tohutoro APA (7th ed.)
Kahn, D. (2004). The reader of gentlemen's mail: Herbert O. Yardley and the birth of American codebreaking. Yale University Press.
Tohutoru Kātū Chicago (17th ed.)
Kahn, David. The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking. New Haven: Yale University Press, 2004.
Tohutoro MLA (9th ed.)
Kahn, David. The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking. Yale University Press, 2004.
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