Παραπομπή APA

Moore, G. (2018). Enigma: Crack the code : puzzles, codes and challenging conundrums to test your wits and sharpen your brain. Michael O'Mara Books.

Παραπομπή Chicago Style

Moore, Gareth. Enigma: Crack the Code : Puzzles, Codes and Challenging Conundrums to Test Your Wits and Sharpen Your Brain. London: Michael O'Mara Books, 2018.

Παραπομπή MLA

Moore, Gareth. Enigma: Crack the Code : Puzzles, Codes and Challenging Conundrums to Test Your Wits and Sharpen Your Brain. Michael O'Mara Books, 2018.