1. Barker P: Basic Child Psychiatry. New York, Science House, 1971.
2. Beitchman J: Child Psychiatry, Psychiatric Clinics of North America, vol 8, Philadelphia, W. B. Saunders, 1985.
3. Chess S, Hassibi M: Principles and Practice of Child Psychiatry, ed 2. New York, Plenum Press, 1986.
4. Erikson E: Childhood and Society, ed 2. New York, W. W. Norton, 1963.
5. Fraiberg S: The Magic Years, New York, Charles Scribners, 1959.