REFERENCIAS BIBLIOGRÁFICAS
ZERO TO THREE(1994) Diagnostic clasification 0-3. Diagnostic classification of mental health and developmental disorders of infancy and early childhood. Arlington: National Center for Clinical Infant Programs, 1995 2ed.
WORLD HEALTH ORGANITATION (1996) Classification of child and adolescent psychiatric disorders ICD-10 .Classification of mental and behavioural disorders in children and adolescents Cambridge: Cambridge University Press