The Codebreakers (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "The Codebreakers" in English language version.

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historynewsnetwork.org

Abrams, Arnold (September 19, 2004). "David Kahn: Historian of Secret Codes". Newsday (abridged ed.). Archived from the original on June 21, 2024. Retrieved June 21, 2024 – via History News Network.

Pineau, Roger (1996). The Codebreakers: The Story of Secret Writing by David Kahn, internal CIA book review by Roger Pineau, ca. 1967, released to public 1996. Retrieved from [1].
Abrams, Arnold (September 19, 2004). "David Kahn: Historian of Secret Codes". Newsday (abridged ed.). Archived from the original on June 21, 2024. Retrieved June 21, 2024 – via History News Network.