Alan M. Turing, transcribed by Robert S. Thau (13 February 2000). "Alan Turing's Manual for the Ferranti Mk. I"(PDF). Computer 50. The University of Manchester. Archived from the original(PDF) on 7 June 2011. Retrieved 17 April 2025.
Alan M. Turing, transcribed by Robert S. Thau (13 February 2000). "Alan Turing's Manual for the Ferranti Mk. I"(PDF). Computer 50. The University of Manchester. Archived from the original(PDF) on 7 June 2011. Retrieved 17 April 2025.