1. All references to Marx and Engels are from the following English edition of collected works and abbreviated as CW.
2. Karl Marx, Friedrich Engels: Collected Works. Translated by Richard Dixon et. al. New York: International Publishers, 1975–2004.
3. Allen, Derek P. H. 1973. “The Utilitarianism of Marx and Engels.” American Philosophical Quarterly 10:189–99.
4. ———. 1974. “Is Marxism a Philosophy?” Journal of Philosophy 71:601–12.
5. ———. 1976. “Reply to Brenkert’s ‘Marx and Utilitarianism.’” Canadian Journal of Philosophy 6:517–34.