Moore, G. (2018). Enigma: Crack the code : puzzles, codes and challenging conundrums to test your wits and sharpen your brain. Michael O'Mara Books.
Chicago Stili AlıntıMoore, Gareth. Enigma: Crack the Code : Puzzles, Codes and Challenging Conundrums to Test Your Wits and Sharpen Your Brain. London: Michael O'Mara Books, 2018.
MLA AlıntıMoore, Gareth. Enigma: Crack the Code : Puzzles, Codes and Challenging Conundrums to Test Your Wits and Sharpen Your Brain. Michael O'Mara Books, 2018.
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