Enever, T. (1999). Britain's best kept secret: Ultra's Base at Bletchley Park (revised and expanded 3rd edition.). Sutton Publishing.
Chicago-Zitierstil (17. Ausg.)Enever, Ted. Britain's Best Kept Secret: Ultra's Base at Bletchley Park. revised and expanded 3rd edition. Stroud: Sutton Publishing, 1999.
MLA-Zitierstil (9. Ausg.)Enever, Ted. Britain's Best Kept Secret: Ultra's Base at Bletchley Park. revised and expanded 3rd edition. Sutton Publishing, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.