Kennan 2012, p. 125. Kennan, George F. (2012). "The Sources of Soviet Conduct". American Diplomacy (60th-Anniversary Expanded ed.). Chicago: University of Chicago Press. pp. 113–134. ISBN978-0-226-43148-2.
Kennan 2012, p. 115. Kennan, George F. (2012). "The Sources of Soviet Conduct". American Diplomacy (60th-Anniversary Expanded ed.). Chicago: University of Chicago Press. pp. 113–134. ISBN978-0-226-43148-2.
Kennan 2012, p. 132. Kennan, George F. (2012). "The Sources of Soviet Conduct". American Diplomacy (60th-Anniversary Expanded ed.). Chicago: University of Chicago Press. pp. 113–134. ISBN978-0-226-43148-2.