Riess, B.F.: Psychoanalytic Theory and Related Approaches. In Wolman, B.B.: Manual of Child Psychopathology. New York, McGraw-Hill Book Company, 1972, p. 1189.
2.
Flavell, John H.: The Developmental Psychology of Jean Piaget. Princeton , D. Van Nostrand Company, Inc., 1963.
3.
Ginsburg, Herbert and Opper, Sylvia: Piaget's Theory of Intellectual Development, An Introduction. Englewood Cliffs, Prentice-Hall, Inc., 1969.
4.
Wolman, Benjamin B.: Manual of Child Psychopathology. New York, McGraw-Hill Book Company, 1972.
5.
Cobliner, W. Godfrey: The Geneva School of Genetic Psychology and Psychoanalysis: Parallels and Counterparts. In Spitz, René A.: The First Year of Life. New York, International Universities Press, Inc., 1965, pp. 301-56. (An excellent summary)
6.
Piaget, Jean: Piaget's Theories. In Mussen, Paul H.: Carmichael's Manuel of Child Psychology, Volume 1, 3rd ed. New York, John Wiley and Sons, Inc., 1965, pp. 703-32. (An excellent summary by Piaget himself).
7.
Piaget, Jean: The Origins of Intelligence in Children. New York, International Universities Press, Inc., 1952.
8.
Piaget, Jean: The Construction of Reality in the Child. New York, Basic Books, Inc., 1954.
