Frankel, J. A., Stein, E., & Wei, S. (1997). Regional trading blocs in the world economic system. Institute for International Economics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrankel, Jeffrey A., Ernesto Stein, और Shang-Jin Wei. Regional Trading Blocs in the World Economic System. Washington, DC: Institute for International Economics, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFrankel, Jeffrey A., et al. Regional Trading Blocs in the World Economic System. Institute for International Economics, 1997.
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