1. Evaluating Head Start: A Recommended Framework for Studying the Impact of the Head Start Program,1999
2. Bibliography: illustrative randomized field experiments for program planning and evaluation;Boruch;Evaluation,1974
3. Randomized field experiments for program planning, development and evaluation;Boruch;Evaluation Quarterly,1978
4. Randomization and field experimentation;Boruch;New Directions for Program Evaluation,1985
5. Selecting a control group: an analysis of the randomization process in twelve social reform programs;Conner;Evaluation Quarterly,1977