1. ADIE, R. F. and G. E. POITRAS (1974) Latin America, The Politics of Immobility. Englewood Cliffs, NJ: Prentice-Hall.
2. Agency for International Development (1977) Costa Rica—Commodity Systems. (Proposal and Recommendations for the Review of the Development Loan Committee, AID-DLC/P-2268). Washington, DC: Department of State, Agency for International Development.
3. BANFIELD, E. C. (1958) The Moral Basis of a Backward Society. New York: Free Press.
4. A Replication: Modes of Political Participation in Costa Rica