BEDNAR, R. L. (1970) "Group psychotherapy research variables."International J. of Group Psychotherapy20, 2: 146-152.
2.
BERGIN, A. E. (1967) "An empirical analysis of therapeutic issues," in D. S. Arbuckle (ed.) Counseling and Psychotherapy: An Overview. New York: McGraw-Hill.
3.
BRUCE, P. (1969) "Sources for personal validation."Counselor Education and Supervision8, 4: 327-330.
4.
BUNKER, D. R. (1965) "Individual applications of laboratory training."J. of Applied Behavioral Sci.1, 2: 131-148.
5.
EDDY, W. B. and B. LUBIN (1971) "Laboratory training and encounter groups."Personnel and Guidance J.49, 8: 625-635.
6.
FOREMAN, M. E. (1967) "T-Groups: their implications for counselor supervision and preparation."Counselor Education and Supervision7, 1: 48-53.
7.
GAZDA, G. M. and M. J. LARSEN (1968) "A comprehensive appraisal of group and multiple counseling."J. of Research and Development in Education1, 1: 57-132.
8.
GOLLSCHALK, L. A. and A. H. AUERBACH (1966) "The structured personality inventory in measurement of effects of psychotherapy," in Methods of Research in Psychotherapy. New York: Appleton-Century-Crofts.
9.
KEMP, C. G. (1970) Foundations of Group Counseling. New York: McGraw-Hill.
10.
LIEBERMAN, M. A. , I. D. YALOM, and M. M. MILES (1973) Encounter Groups: First Facts. New York: Basic Books.
11.
MAHLER, C. A. (1969) Group Counseling in the Schools. Boston: Houghton Mifflin.
12.
MANN, J. (1966) "Evaluation of group psychotherapy: a review in evidence," in J. L. Moreno (ed.) The International Journal of Group Psychotherapy. New York: Philosophical Library.
13.
OHLSEN, M. M. (1970) Group Counseling. New York: Holt, Rinehart & Winston.
14.
OLCH, D. and D. L. SNOW (1970) "Personality characteristics of sensitivity group volunteers."Personnel and Guidance J.48, 10: 848-850.
15.
PARLOFF, M. B. (1970) "Group therapy and the small-group field: an encounter."International J. of Group Psychotherapy20, 3: 267-304.
16.
PATTERSON, C. H. (1967) The Counselor in the School: Selected Readings. New York: McGraw-Hill.