Kahn, D. (2004). The reader of gentlemen's mail: Herbert O. Yardley and the birth of American codebreaking. New Haven: Yale University Press.
Chicago Style CitationKahn, David. The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking. New Haven: Yale University Press, 2004.
MLA CitationKahn, David. The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking. New Haven: Yale University Press, 2004.
Warning: These citations may not always be 100% accurate.