Isaacson, W. (2021). The Code Breaker. Simon & Schuster.
Lua i Stíl Chicago (17ú heag.)Isaacson, Walter. The Code Breaker. London: Simon & Schuster, 2021.
Lua MLA (9ú heag.)Isaacson, Walter. The Code Breaker. Simon & Schuster, 2021.
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