The Language of Computers a transcript of a talk given by Lord Bowden of Chesterfield, at Brighton College of Technology. the first Richard Goodman Memorial Lecture
Belden, Thomas and Marva (1962). The Lengthening Shadow: The Life of Thomas J. Watson (1st ed.). United States of America and Canada: Little, Brown and Company, Inc. p. 207. LCCN61-8065.