DraperHal. 1986. The Marx-Engels Glossary.New York: Schocken Books.
2.
DraperHal. 1990. Karl Marx's Theory of Revolution. VolumeIV: Critique of Other Socialisms. New York: Monthly Review Press.
3.
IrvineWilliam D.1989. The Boulanger Affair Reconsidered. New York: Oxford. MECW. Marx, Karl, and Frederick Engels. 2001a.Collected Works of Karl Marx and Frederick Engels. Volume 48: Engels, 1887–1889. New York: International Publishers.
4.
IrvineWilliam D.2001b. Collected Works of Karl Marx and Frederick Engels. Volume 49: Engels, 1890-.1892 New York: International Publishers.
5.
NimtzAugust. 2000. Marx and Engels: Their Contribution to the Democratic Breakthrough.Albany, New York: SUNY Press.