Παραπομπή APA

Hodges, A. (1992). Alan Turing: The Enigma. Vintage.

Παραπομπή Chicago Style

Hodges, Andrew. Alan Turing: The Enigma. London: Vintage, 1992.

Παραπομπή MLA

Hodges, Andrew. Alan Turing: The Enigma. Vintage, 1992.