1986 1 2 3 4 5 6 7 8 Polmer, Norman & Allen, Thomas The Spy Book, New York: Random House, 1998 page 357. ↑ Wheeler-Bennett, John The Nemesis of Power The German Army In Politics 1918–1945, London: Macmillian, 1967 pages 12–13. ↑ u200b, British Universities Film & Video Council, The London Interrogations 1 2 3 4 5 Polmer, Norman & Allen, Thomas The Spy Book, New York: Random House, 1998 page 358. ↑ Howe, Russel Warren (1986).