1. John Elster, Making Sense of Marx (Cambridge: Cambridge University Press, 1986), p. 17.
2. See Walker Connor, The National Question in Marxist-Leninist Theory and Strategy ( Princeton, NJ: Princeton University Press , 1984), pp. 7-8; Vendulka Kubalkova and Albert Cruickshank , Marxism-Leninism and International Relations , op. cit, p. 48; Ronaldo Munck, The Difficult Dialogue: Marxism and Nationalism (London : Zed Books, 1986), p. 22.
3. See, for example, Engels' letter to Borgius in Karl Marx and Friedrich Engels, Selected Letters (Beijing: Foreign Languages Press, 1977). p. 101.