1. Abrami, P. C., Cohen, P. A., & d’Apollonia, S., (1988). Implementation problems in meta-analysis. Review of Educational Research, 58, 151–179.
2. Baucom, D. H., & Hoffman, J. A. (1986). The effectiveness of marital therapy: Current status and application to the clinical setting. In. N. Jacobson & A. Gurman (Eds.), Clinical handbook of marital therapy (pp. 597–620). New York: Guilford.
3. Beelmann, A., Pfingsten, U., & Lösel, F. (1991). Effects of training social competence in children: A meta-analysis of recent evaluation studies. Journal of Clinical Child Psychology, 23, 260–271.
4. Casey, R. J., & Berman, J. S. (1985). The outcome of psychotherapy with children. Psychological Bulletin, 98, 388–400.
5. Cooper, H., & Hedges, L. V. (Eds.). (1994). Handbook of research synthesis. New York: Russell Sage Foundation.