Andrew Hodges, Andrew Hodges, Douglas Hofstadter: Alan Turing: The Enigma: The Book That Inspired the Film The Imitation Game - Updated Edition. Princeton University Press, 2015, ISBN 978-1-4008-6512-3, doi:10.1515/9781400865123.3 (degruyter.com [abgerufen am 13. September 2022]).
doi.org
Andrew Hodges, Andrew Hodges, Douglas Hofstadter: Alan Turing: The Enigma: The Book That Inspired the Film The Imitation Game - Updated Edition. Princeton University Press, 2015, ISBN 978-1-4008-6512-3, doi:10.1515/9781400865123.3 (degruyter.com [abgerufen am 13. September 2022]).
