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„Cârtiţele”: agenţii infiltraţi
-William Hood, „Mole”, New York: Norton, 1982.
- Nigel West, „Molehunt: Searching for Soviet Spies in British Intelligence”, New York, 1991.
- Jay Robert Nash, „Spies: A Narrative Encyclopedia of Dirty Deeds and Double Dealing from Biblical Times to Today”, New York, 1997.
-David A. Vise, „The Bureau and the Mole: The Unmasking of Robert Philip Hanssen, the Most Dangerous Double Agent in FBI History”, New York, 2002.
-Thomas W. Smith, „Encyclopedia of the Central Intelligence Agency”, New York City, 2003
-Popescu Alexandru, „Dicţionar universal al spionilor”, Ed. Meronia, Bucureşti, 2010
