1. Whose side are we on?;Becker;Social Problems,1967
2. Doing good or worse: Evaluation research politically re-examined;Berk;Social Problems,1976
3. Beyond objectivism and relativism;Bernstein,1983
4. Methods for the experimenting society;Campbell;Paper presented at the annual meeting of the American Psychological Association, Washington, D.C.,1971
5. Postpositivist critical multiplism;Cook,1985