1. Barrera, M., Jr. (1981). Social support in the adjustment of pregnant adolescents, assessment issues. In: B. Gottlieb (Ed.), Social networks and social support (pp. 69–96). Beverly Hills CA: Sage.
2. The structure of social support: A conceptual and empirical analysis;Barrera;Journal of Community Psychology,1983
3. Berrington, A., Diamond, I., Ingham, R., & Stevenson, J. (2005). Consequences of teenage parenthood: Pathways which minimize the long term negative impacts of teenage childbearing. Department of Health (England) contract number 0370020. Retrieved September 26, 2006 from 〈http://www.dfes.gov.uk/research/data/uploadfiles/RW52.pdf〉.
4. Bronfenbrenner, U., Moen, P., & Garbarino, J. (1984). Child, family, and community. In R. Park (Ed.), Review of child development research: Vol. 7. The family (pp. 283–328). Chicago: University of Chicago Press.
5. Research review: Teenage pregnancy and motherhood: The contribution of support;Bunting;Child and Family Social Work,2004