1. Achenbach, T. (1991a). “Comorbidity” in child and adolescent psychiatry: Categorical and quantitative perspectives. Journal of Child and Adolescent Psychopharmacology, 1, 1–8.
2. Achenbach, T. (1991b). Manual for the child behavior checklist/4–18 and 1991 Profile. Burlington, VT: University of Vermont Department of Psychiatry.
3. Ambrosini, P. (2000). Historical development and present status of the schedule for affective disorders and schizophrenia for school-age children (K-SADS). Journal of the American Academy of Child & Adolescent Psychiatry, 39, 49–58.
4. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders IV. Washington, DC.
5. American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders IV-TR. Washington, DC.