5David Easton and jack Dennis, Children in Political System: Origins of Political Legitimacy (N.Y.McGraw-Hill Book Company, 1969);.
6Gabriel A. Almond, "A Functional Approach to Comparative Politics," in G. A. Almond and J.S. Coleman(ed.), The Politics of the Developing Areas(Princeton: Princeton University Press, 1960).
7Gabriel A. Almond and Sidney Verba, The civic culture (Boston: Little, Brown & Company, 1963),pp.20.
