Berry, Thomas (l990) The Dream of the Earth, Sierra Club Books, San Francisco.

Bettleheim, Bruno"The Importance of Play" The Atlantic Monthly, March l987, p. 40.

Erikson, Erik H. Childhood and Society, W. W. Norton & Company, Inc. New York, l963.
An article in the New York Times, June, l4, l988 entitled "The Completed Life Cycle"

Gardner, Howard Intelligence Reframed. Basic Books, A Member of the Perseus Book Group, New York, l999..

Greenspan, Stanley I. M.D. The Growth of the Mind, Addison-Wesley., Reading, Mass., l997.

Newsweek, Special Edition, Spring/Summer l997, From Birth to Three.

Pearce, Joseph ChiltonMagical Child, Penguin Group, New York, l977.

Pearce, Joseph ChiltonEvolution's End: Claiming the Potential of Our Intelligence Harper San Francisco, l992

Piaget, Jean and Barbel Inhelder, The Psychology of the Child, Basic Books, Inc., New York, l969.

Pulaski, Mary Ann Spencer, Ph.D. Your Baby's Mind And How It Grows: Piaget's Theory for Parents, Harper & Row, New York, l978.

Roszak, Theodore The Voice of the Earth, Simon and Schuster, New York, l994. Interview with Roszak l994

Wilber, Ken A Brief History of Everything, Shambhala, Boston & London, l996.