1. Aspy, D. N. A study of three facilitative conditions and their relationships to the achievement of 3rd grade students. Unpublished doctoral dissertation. University of Kentucky, 1965. In Truax, C. B. and Carkhuff, R.G., Towards effective counselling and psychotherapy. New York: Atherton, 1972.
2. Aspy, D.N. and Hadlock, N. The effect of empathy, warmth and genuineness on elementary students’ reading achievement. Unpublished thesis. University of Florida, 1966. In Truax, C.B. and Carkhuff, R. B. Towards effective counselling and pyschotherapy. New York: Atherton: 1972.
3. Bills, R.E. Non-directive play therapy with retarded readers. Journal of Consultative Psychology, 1950, 14, 140–149.
4. Carroll, H.M.C. The remedial teaching of reading: an evaluation. Remedial Education, 1967, 2, 1, 4–12.
5. Elliott, C.D. and Pumfrey, P.D. The effects of non-directive play therapy on some maladjusted boys. Educational Research, 1972, 14 (2), 158–161.