HELMS R. (with Hood W). A Look over My Shoulder: A Life in the Central Intelligence Agency. New York: Random House, 2003. P. 124.
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EVAN TH. The Very Best Men: The Daring Early Years of the CIA. New York: Simon & Schuster, 1995. Pp. 25, 30, 36, 142–152. Также: U. S. Senate. Final Report. pt. 6. History of the Central Intelligence Agency; IMMERMAN R. A Brief History of the CIA // In: Theoharis A. et al., eds. The Central Intelligence Agency: Security Under Scrutiny. Westport, Conn.: Greenwood Press, 2006. P. 21.
