·Corporatism and Development in the Iberic-Latin World. Persistent Strains and New Variations»

In The Review of Politics, vol. I, n. º Jan., 1974.

·Development and Political Corporatism. The Portuguese Case

Amherst, University of Massachussetts Press, 1977.

·The Transition to Democracy in Spain and Portugal

Washington D. C., American Enterprise Institute, 1989.,

·New Directions in Comparative Politics

Boulder, Westview Press, 1991. Ed.