1. In praise of differences;Connor;Evaluation Practice,1990
2. Quasi-experimental analysis: A mixture of methods and judgment;Cordray;New Directions in Program Evaluation,1986
3. Improving the quality of evidence: Interconnections among primary, secondary analysis and quantitative synthesis;Cordray,1983
4. Quantitative synthesis: An actuarial base for planning impact evaluations;Cordray;New Directions for Program Evaluation,1985
5. The arts and sciences of program evaluation;Lincoln;Evaluation Practice,1991