1. Politics and the Professors: The Great Society in Perspective. Washington, D.C.: The Brookings Institution, 1978.
2. Coupling Randomized Experiments and Approximations To Experiments in Social Program Evaluation
3. ?On Common Contentions About Randomized Experiments for Planning and Evaluating Social Programs.? In and (Eds.), Experimental Testing of Public Policy: The Proceedings of the 1974 Social Science Research Council Conference on Social Experiments. Boulder, Colo.: Westview Press, 1975a.