1. Nicholas V. Gianaris, The North American Free Trade Agreement and the European Union (Westport, CT: Praeger, 1998), 4–13;
2. and Edgar Ortiz, “NAFTA and foreign investment in Mexico,” Foreign Investment and NAFTA, ed., Alan M. Rugman (Columbia, SC: University of South Carolina Press, 1994), ch. 7.
3. See, for example, Charles F. Doran, “When building North America, deepen before widening,” A New North America: Cooperation and Enhanced Interdependence, eds., Charles F. Doran and Alvin Paul Drischler (Westport, CT: Praeger, 1996), ch. 4.
4. Henry Nau, “From integration to interdependence: Gains, losses, and continuing gaps,” International Organization 33, no. 1 (Winter 1979): 119–47.
5. Andrew Moravcsik popularized this approach in contrasting it with intergovernmentalism. See his “Negotiating the Single European Act: National interests and conventional statecraft,” International Organization 45, no. 1 (Winter 1991): 19–56.