1. Althusser, L. 1970. For Marx. New York: Vintage.
2. Bobbio, N. 1987a. Future of Democracy. Minneapolis: University of Minnesota Press.
3. —. 1987b. Which Socialism? Minneapolis: University of Minnesota Press.
4. Feuerbach, L. 1964. The Essence of Christianity. New York: Harper Torchbooks, 1964(1957)
5. Freire, P. 1990. Pedagogy of the Oppressed. New York: Continuum.