1. Barrish, I. J., & Barrish, H. H. (1989).Surviving and enjoying your adolescent. Kansas City, MO: Westport Publishers.
2. Becker, W. C. (1971).Parents are teachers. Champaign, IL: Research Press.
3. Bryk, A. S., & Raudenbush, S. W. (1987). Application of hierarchical linear models to assessing change.Psychological Bulletin, 104, 396?404.
4. Bryk, A. S., & Raudenbush, S. W. (1992).Hierarchical linear models: Applications and data analysis methods. Newbury Park, CA: Sage.
5. Christian, W. P., Hannah, G. T., & Glahn, T. J. (Eds.) (1984). Programming effective human services. New York: Plenum Press.