Brodbeck, May, ed. 1969. Readings in the philosophy of the social sciences.New York: Macmillan .
2.
Gunnell, John G.1975. Philosophy, science, and political inquiry.Morristown, NJ: General Learning Press.
3.
Holton, Gerald, and Robert S. Morison, eds. 1979. Limits of scientific inquiry.New York: Norton .
4.
Kassiola, Joel.1981. Feyerabend's Against method: Epistemology and political inquiryPolitical Science Reviewer11:53-82.
5.
Matson, Floyd W.1966. The broken image: Man, science and society.Garden City, NY: Anchor /Doubleday.
6.
Popper, Karl R.1972. Objective knowledge: An evolutionary approach.Oxford: Oxford University Press.
7.
Sprout, Harold, and Margaret Sprout .1965. The ecological perspective on human affairs with special reference to international politics.Princeton, NJ: Princeton University Press .