Facts for Families
From the American Academy of Child Adolescent Psychiatry, a fact sheet on Oppositional Defiant Disorder

Oppositional Defiant Disorder
Facts and strategies for parents from Notmykid.org

 Oppositional defiant disorder (ODD)
From the Mayo Clinic.  Includes a section on coping skills.

Oppositional Defiant Disorder (ODD) versus Conduct Disorder
From the Teens with Problems website.