1. How regression artifacts in quasi-experimental evaluations can mistakenly make compensatory education look harmful;Campbell,1970
2. On being useful: The nature and consequences of psychological research on social problems;Caplan;American Psychologist,1973
3. Why bureaucrats play games;Halperin,1971
4. Practical program evaluation for state and local government officials;Hatry,1973
5. The policy-making process;Lindblom,1968