References
North Douglass (1993), Instituciones, cambio institucional y desempeño económico, Fondo de Cultura Económica, México.
Tsebelis, George (1990), Nested games. Rational choise in comparative politics, University of California Press, Berkeley.
Putnam , Robert D. (1993), Making democracy work: civic traditions in modern Italy, Princeton University Press, New Jersey.
