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Perkhidmatan Keselamatan Persekutuan (pengganti KGB)

Christopher Andrew and Vasili Mitrokhin, The Mitrokhin Archive: The KGB in Europe and the West, Gardners Books (2000) ISBN 0-14-028487-7; Basic Books (1999) ISBN 0-465-00310-9; trade (2000) ISBN 0-465-00312-5

Christopher Andrew and Vasili Mitrokhin, The World Was Going Our Way: The KGB and the Battle for the Third World, Basic Books (2005) ISBN 0-465-00311-7

John Barron, KGB: The Secret Work of Soviet Secret Agents, Reader's Digest Press (1974) ISBN 0-88349-009-9

Amy Knight, The KGB: Police and Politics in the Soviet Union, Unwin Hyman (1990) ISBN 0-04-445718-9

Richard C.S. Trahair and Robert Miller, Encyclopedia of Cold War Espionage, Spies, and Secret Operations, Enigma Books (2009) ISBN 978-1-929631-75-9