Gil. E.
The Healing Power of Play
New York: Guilford Publications, 1991
Hughes, F.
Children, Play and Development
Boston. Allyn and Bacon, 1991
Krall, V.
A Play Therapy Primer: Therapeutic approaches to children with emotional problems
New York: Human Sciences Press, 1989
Landreth, G., Homeyer, L., Glover, G., & Sweeney, D.
Play Therapy Interventions with Children’s Problems
Northvale, NJ: Jason Aronson, Inc., 1995
Landreth, G.
Play Therapy: The art of the relationship
Muncie, IN: accelerated Development Press, 1991
Lenore Terr
Too Scared To Cry: Psychic Trauma In Childhood
Basic Books, 1992
David Elkind
The Power of Play: Learning What Comes Naturally
Da Capo Lifelong Books, 2007