Cross, K.P.Beyond the open door. San Francisco: Jossey-Bass, 1971.
2.
Harvey, O.J. , Hunt, D.E. & Schroder, H.M.Conceptual systems and personality organization. New York: Wiley, 1961.
3.
Knefelkamp, L.L. Developmental instruction: Fostering intellectual and personal growth of college students. Unpublished doctoral dissertation, University of Minnesota, 1974.
4.
Knefelkamp, L.L. & Slepitza, R.A cognitive developmental model of career development and adaptation of the Perry scheme. Counseling Psychologist, 1976, 6(3), 53-58.
5.
Parker, C.A.Institutional self-renewal in higher education . Journal of College Student Personnel, 1971, 12, 6.
6.
Perry, W. Jr. , Intellectual and ethical development in the college years. New York: Holt, Rinehart & Winston, 1970.
7.
Sanford, N.Where colleges fail. San Francisco: Jossey-Bass, 1967
8.
Slepitza, R. & Knefelkamp, L.L.Perry's scheme of intellectual development: An adaptation to career counseling. Presentation of Division 17 and Division 7 Sponsored Symposium: "Developmental Counseling Psychology: Higher Education Programs." American Psychological Association Convention, 1975.
9.
Widick, C. An evaluation of developmental instruction. Unpublished doctoral dissertation, University of Minnesota, 1975.
10.
Widick, C. , Knefelkamp, L.L. & Parker, C.A.The counselor as developmental instructor. Counselor Education and Supervision, 1975, 14(4), 286-296.
11.
Yankelovich, D.The new morality: A profile of American youth in the seventies. New York: McGraw-Hill, 1974.