| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Codebreakers' Victory: How the Allied Cryptogaphers Won World War II | 978-0-451-20979-5 (0-451-20979-6) | 2003 |
| The Spies Who Never Were: The True Story of the Nazi Spies Who Were Actually Allied Double Agents | 978-0-451-21751-6 (0-451-21751-9) | 2006 |