- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)234
- Héderváry, Claire de15
- David Rohde4
- CIA (Central Intelligence Agency)3
- Pacepa, Ion Mihai3
- Costello, John2
- Hutton, Joseph Bernard2
- Le Carré, John2
- Lonsdale, Gordon Arnold2
- Page, Bruce2
- Robert H. Silk2
- Stevenson, William2
- US Department of State2
- Bar-Zohar, Michael1
- Boltanski, Luc1
- Boyle, Andrew1
- Brook-Shepherd, Gordon1
- Chambers, Whittaker1
- Cline, Ray S.1
- Deighton, Len1