Hufbauer GC & Schott JJ (2004) NAFTA Revisited: Achievements and Challenges Institute for International Economics, Capítol 1, Overview Arxivat 2007-06-20 a Wayback Machine.
Hufbauer GC & Schott JJ (2004) NAFTA Revisited: Achievements and Challenges Institute for International Economics, Capítol 1, Overview Arxivat 2007-06-20 a Wayback Machine.