Allen, J. P. / 1992 / The relationships of adolescents’ expectations, and values to delinquency, hard drug use, and unprotected sexual intercourse / Development and Psychop Coopersmith,S / 1967 / The antecedents of self-esteem / W. H. Freeman Gresham, F, M / 1990 / Social Skills Rating System Circle pines / American Guidance Service Haggerty, J. R. / 1996 / Stress, risk, and resilience in children and adolescents / Cambridge University Press Sweeny, D. / 1999 / Group play therapy: How to do it, how it works, whom it’s best for / Jossey-Bass