A. R. · R. A. · R.R. · R. Ratcliff
| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Delusions of Intelligence: Enigma, Ultra, and the End of Secure Ciphers | Paperback | 978-0-521-73662-6 (0-521-73662-5) | 2008 |
| Delusions of Intelligence: Enigma, Ultra, and the End of Secure Ciphers | Hardcover | 978-0-521-85522-8 (0-521-85522-5) | 2006 |