1. American Psychiatric Association. (1987). Diagnostic and statistical manual of mental disorders (3rd ed., rev.). Washington, DC: Author.
2. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author.
3. Barkley, R. A. (1992). Workshop manual: Attention deficit-hyperactivity disorder in adults. Unpublished manuscript, University of Massachusetts Medical Center, Boston.
4. Barkley, R. A. (1998). Attention deficit hyperactivity disorder: A handbook for diagnosis and treatment (2nd ed.). New York: Guilford.
5. Comorbidity of attention deficit hyperactivity disorder with conduct, depressive, anxiety, and other disorders