Frankel, J. A., Stein, E., & Wei, S. (1997). Regional trading blocs in the world economic system. Institute for International Economics.
Cita Chicago (17th ed.)Frankel, Jeffrey A., Ernesto Stein, i Shang-Jin Wei. Regional Trading Blocs in the World Economic System. Washington, DC: Institute for International Economics, 1997.
Cita MLA (9th ed.)Frankel, Jeffrey A., et al. Regional Trading Blocs in the World Economic System. Institute for International Economics, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.