| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| American Espionage: A Historical Encyclopedia | 978-1-85109-807-1 (1-85109-807-0) | 2009 | Steven W. Guerrier |
| Espionage: A Reference Handbook | 978-1-57607-950-8 (1-57607-950-3) | 2003 | |
G. P. · G. Peter · Glenn Hastedt · Glenn P. Hastedt · P. H. · Peter H.