Stalin. Report, op. cit., p. 119; p. 245, № 20.

Stalin. Report, op. cit., pp. 119–120.

Leon Trotsky. Are There No Limits to the Fall? A Summary of the Thirteenth Plenum of the Executive Committee of the Communist International (18 January 1934). Writings of Leon Trotsky (New York: Pathfinder Press, 1973), vol. 6, p. 210.