1. Altman DG, Machin D, Bryant TN, Gardner MJ (2000) Statistics with Confidence. Bristol: BMJ Books.
2. Barkham M, Rees A, Stiles WB, Hardy GE, Shapiro DA (2002) Dose-effect relations for psychotherapy of mild depression: A Quasi-experimental comparison of effects of 2, 8,and16sessions. Psychotherapy Research, 12(4), 463–474.
3. Barkley R (1990) Attention Deficit Hyperactivity Disorder. A Handbook for Diagnosis and Treatment. New York: The Guildford Press.
4. Barrett P, Ollendick T (2004) Handbook of Interventions That Work with Children and Adolescents: Prevention and Treatment. New York: Wiley.
5. Begg C, Cho M, Eastwood S, Horton R, Moher D, Olkin I, Pitkin R, Rennie D, Schulz KF, Simel D, Stroup DF (1996) Improving the quality of reporting of randomized controlled trials: The CONSORT statement. Journal of the American Medical Association, 276(637), 639.