Harry N. Abrams · National Geographic
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| International Spy Museum's Handbook of Practical Spying | 978-0-7922-6795-9 (0-7922-6795-8) | 2004 | Jack Barth |
| The Real Spy's Guide to Becoming a Spy | 978-0-8109-8329-8 (0-8109-8329-X) | 2009 | Suzanne Harper |
P.E. · Peter Ernst · Peter Ernszt · Petra Ernst · Petra Ernzerhof