Drucker, P. (1968) "The sickness of government," in The Age of DiscontinuityNew York: Harper & Row.
2.
Levine, R.A. (1968a) Statement in Hearings before the Joint Economic Committee, U. S. Congress, June.
3.
Levine, R.A. (1968b) "Rethinking our social strategies." Public Interest
4.
--- ( 1968b) "Rethinking our social strategies." Public Interest (spring).
5.
Lowi, T.J. (1969) The End of Liberalism. New York : W. W. Norton.
6.
Lyday, J.M. (1970) "Criterion for income maintenance programs," in Increasing Understanding of Public Programs and Policies 1970. Chicago: Farm Foundation.
7.
Marmor, T. (1971) "On comparing income maintenance alternatives." Amer. Pol. Sci. Rev. (March).
8.
Rivlin, A.M. (1971) Systematic Thinking about Social Action. Washington, D. C.: Brookings Institution.