Hufbauer, G. C., & Schott, J. J. (1993). NAFTA: An assessment. Institute for International Economics.
Lua i Stíl Chicago (17ú heag.)Hufbauer, Gary Clyde, agus Jeffrey J. Schott. NAFTA: An Assessment. Washington, DC: Institute for International Economics, 1993.
Lua MLA (8ú heag.)Hufbauer, Gary Clyde, agus Jeffrey J. Schott. NAFTA: An Assessment. Institute for International Economics, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.