1. Achenbach, T. M. & Edelbrock, C. S. (1991). Manual for the Child Behavior Checklist and Revised Child Behavior Profile. Burlington, VT: University Associates in Psychiatry.
2. Administration on Children, Youth and Families. (1996). An annotated bibliography of Head Start research: 1985-1995. Washington, DC: US Department of Health and Human Services.
3. Administration on Children, Youth and Families. (2001). Head Start FACES: Longitudinal findings on program performance (Third progress report). Washington, DC: US Department of Health and Human Services.
4. Ainsworth, M. D. S. (1973). The development of infant-mother attachment. In B. Caldwell & H. Ricciuti (Eds.), Review of child development research: Vol. 3 (pp. 1-94). Chicago, IL: University of Chicago Press.
5. Beckwith, L. (1990). Adaptive and maladaptive parenting implications for intervention. In S. J. Meisels & J. P. Shonkoff (Eds.), Handbook of early intervention (pp. 53-77). New York: Cambridge University Press.