1. Allen, M., & Stevens, R. (1998). Middle grades social studies: Teaching and learning for active and responsible citizenship. (2nd ed.). Needham Heights, MA: Allyn and Bacon.
2. Apple, M., & Beane, J., (Eds.). (1995). Democratic schools. Alexandria, VA: Association for Supervision and Curriculum Development.
3. Barbieri, M. (1995). Sounds from the heart. Portsmouth, NH: Heinemann.
4. Something clarified, nothing of value: A rhetorical critique of values clarification;Boyd D.;Educational Theory,1984
5. Meeting at the Crossroads