1. Winokur, G. (1991). Epidemiology and genetics of depression and mania. In M. T. Tsuang (Ed.), K. S. Kendler (Ed.); et al. Series in psychosocial epidemiology volume 8: Genetic issues in psychosocial epidemiology (pp. 153–174). New Brunswick: Rutgers University Press
2. Tabachnik, B. G., & Fidell, L. S. (1989). Using multivariate statistics (2nd Edition). New York: Harper & Row
3. The long-term sequelae of child and adolescent abuse: A longitudinal community study
4. Shneidman, E. S. (1985). Definition of suicide. New York: Wiley
5. School Effects on Pupil Progress: Research Findings and Policy Implications