Garland, C.
, Kennard, D., Roberts, J.P., Winter, D.A., Caine, T.M., Dick, B. and Stevenson, F.B. (1984) `What is a Group Analyst? A Preliminary Investigation of Conductors' Interventions', Group AnalysisXVII/2: 137-145.
2.
Lieberman, M.A.
, Yalom, I.D. and Miles, M.B. (1973) Encounter Groups: First Facts. New York: Basic Books.
3.
Sloane, R.B.
, Staples, F.R., Cristol, A.H., Yorkston, J.J. and Whipple, K. (1975) Psychotherapy Versus Behaviour Therapy. Cambridge, MA.: Harvard Commonwealth Fund.