1. Achenbach, T. M. (1991). Manual for the Child Behavior Checklist 4/18 and 1991 Profile. Burlington: University of Vermont, Department of Psychiatry.
2. Anderman, L. H. & Freeman, T. M. (2004). Students' sense of belonging in school. In P. R. Pintrich & M. L. Maehr (Eds.), Advances in motivation and achievement (Vol. 13, pp. 27-63). Oxford, England: Elsevier.
3. Blum, R. W., McNeely, C. A. & Rinchart, P. M. (2002). Improving the odds: The untapped power of schools to improve the health of teens. Minneapolis: University of Minnesota, Center for Adolescent Health and Development.
4. Age at Onset of Selected Mental Disorders in Five Community Populations