Hodges, Andrew. Alan Turing : the enigma / Andrew Hodges. - London : Vintage, 1992. - xix, 586 p. ; 20 cm. ISBN: 0099116413 Subjects--Personal Names: Turing, Alan Mathison, 1912-1954. Subjects--Topical Terms: Mathematicians--Great Britain--Biography. Dewey Class. No.: 510.92 / HOD