Further Reading
- Cookridge, E.H. Gehlen: Spy of the Century. New York: Random House, 1972. ISBN 0-394-47313-2
- Flocken, Jan von and Scholz, Michael F. Ernst Wollweber. Saboteur - Minister - Unperson, Berlin: Aufbau-Verlag 1994. ISBN 3-351-0219-3
- Lee, Martin A. The Beast Reawakens. New York: Little, Brown and Company, 1997. ISBN 0-316-51959-6
- Payne, Ronald and Dobson, Christopher. Who's Who in Espionage. New York: St. Martin's Press, 1984. ISBN 0-312-87432-4
- Whitney, Craig R. Spy Trader. New York: Times Books - Random House, 1994. ISBN 0-8129-2461-4
- Wolf, Markus. Man Without a Face: The Autobiography of Communism's Greatest Spymaster. New York: Times Books - Random House, 1997. ISBN 0-8129-6394-6
Read more about this topic: Ernst Wollweber
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