1. Planning theory;Alexander,1979
2. An evaluation of family preservation services: Fitting agency services to family needs;Berry;Social Work,1992
3. Qualitative methods in program evaluation;Broughton;American Journal of Health Promotion,1991
4. The basics of open systems evaluation: A resource paper;Cohen,1993
5. Effective evaluation: Improving the usefulness of evaluation results through responsive and naturalistic approaches;Guba,1981