1. Beswick, G., & Mann, L. (1994). State orientation and procrastination. In J. Kuhl & J. Beckmann (Eds.), Volition and personality: Action versus state orientation (pp. 391-396). Seattle, WA: Hogrefe & Huber.
2. Cassel, J. (1976). The contribution of the social environment to host resistance. American Journal of Epidemiology, 104, 107-123.
3. Cattaneo, A., Berger, E., Casabianca, E., Crespi Branca, M., Galeandro, C., Guidotti, C., Marcionetti, J., Mariotta, M., Mulatero, F., Origoni, P., Tozzini Paglia, L., Dandrea, U., & Mossi, G. (2010). Scuola a tutto campo. Indicatori del sistema scolastico ticinese. Locarno: CIRSE-DFA SUPSI.
4. Cobb, S. (1976). Social support as a moderator of life stress. Psychosomatic Medicine, 38, 300-314.
5. Coopersmith, S. (1967). The antecedents of self-esteem. San Francisco: Freeman.