3. Maslow, A. H. Motivation and Personality. New York: Harper and Row, 1954.
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4. MacLean, Paul. Triune Concept of the Brain and Behavior. Toronto: University of Toronto Press, 1973.
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5. Sagen, Carl. The Dragons of Eden., New York: Ballantine Books, 1977.
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6. Vygotsky, Lev. Thought and Language. Cambridge: MIT Press, 1962.
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7. A Committee of College and University Examiners. "Educational Objectives and Curriculum Development." Taxonomy of Educational Objectives—Handbook 1: The Cognitive Domain. Benjamin S. Bloom, ed. New York: David McKay Company, Inc., 1956.
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8. Kohlberg, Lawrence. "Moral Education for a Moral Transition." Educational Leadership 32 (October 1975): 46-54.
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9. Magid, Ken and Carole A. McKelvey. High Risk: Children without a Conscience. New York: Bantam Books, 1987.
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10. Unmasking the Psychopath—Antisocial Personality and Related Syndromes. William H Reid, Darwin Dorr, John I. Walker, Jack W. Bonner, eds. New York: W.W. Norton, 1986.
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11. Cline, Foster. Understanding and Treating the Severely Disturbed Child. Evergreen, CO: Evergreen Consultants in Human Behavior, 1979.
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12. Handbook for Boys. New York: Doubleday-Page and Co., 1911.
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