
Speech in the Berlin Zeughaus http://www.nommeraadio.ee/meedia/pdf/RRS/Adolf%20Hitler%20-%20Collection%20of%20Speeches%20-%201922-1945.pdf (March 10, 1940) p. 699
1940s
As quoted in Hitler: Speeches and Proclamations by Max Domarus https://books.google.com/books?id=5tdVAAAAYAAJ
1930s
Speech in the Berlin Zeughaus http://www.nommeraadio.ee/meedia/pdf/RRS/Adolf%20Hitler%20-%20Collection%20of%20Speeches%20-%201922-1945.pdf (March 10, 1940) p. 699
1940s
Source: Disputed, Hitler: Memoirs of a Confidant (1978), p. 288
Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 55.
Quoted in "Deutsche Technik", June 1935, p. 270.
Source: How Europe Underdeveloped Africa (1972), p. 310.
“Political Systems, Violence, and War,” chap. 14 in "Approaches to Peace: An Intellectual Map", edit, W. Scott Thompson and Kenneth M. Jensen, Washington, D.C., United States Institute of Peace, 1991, pp. 347-370; and “The Politics of Cold Blood,” Society, Vol. 27 (November/December, 1989) pp. 32-40
1930s, Die verfluchten Hakenkreuzler. Etwas zum Nachdenken (1932)
Quoted in "Physics and Nuclear Arms Today" - Page 94 - by David Hafemeister - Science - 1991.