Alternative strategies in theoretical research / David Easton
Political research : the decision-making framework / Herbert A. Simon
An individualistic theory of political process / James M. Buchanan
The power of power / James G. March
The political aspect of social structure and process / Talcott Parsons
A structural approach to comparative politics / M.G. Smith
Some system approaches to political theory / Anatol Rapoport
Categories for the systems analysis of politics / David Easton.
