1. American Academy of Child and Adolescent Psychiatry(June2001). Normal Adolescent Development Part I.Facts for Families 57. Retrieved December 3 2010 fromwww. accap.org.
2. American Academy of Child and Adolescent Psychiatry(June2001). Normal Adolescent Development Part I.Facts for Families 58. Retrieved December 3 2010 fromwww. accap.org.
3. Measuring the effectiveness of group work: A review and analysis of process and outcome measures