1. I. Yalom, Existential Psychotherapy (New York: Basic Books, Inc., 1980 ).
2. Kluckholm, “Values and Value-Orientation in the Theory of Action,” in T. Parsons and E. Shils (Eds.), Toward a General Theory of Action ( Cambridge, MA: Harvard University Press, 1951 ).
3. Rokeach, Understanding Human Values ( New York: Free Press, 1973 ).
4. Feather, Values in Education and Society ( New York: Free Press, 1975 ).
5. Rokeach, Understanding Human Values