Koch, S. (1994). Double lives: Spies and writers in the secret Soviet war of ideas against the west. Maxwell.
Chicago-viite (17. p.)Koch, Stephen. Double Lives: Spies and Writers in the Secret Soviet War of Ideas Against the West. New York [u.a.]: Maxwell, 1994.
MLA-viite (8. p.)Koch, Stephen. Double Lives: Spies and Writers in the Secret Soviet War of Ideas Against the West. Maxwell, 1994.
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