Kowalczyk, C., & Davis, D. (1995). Tariff phase-outs: Theory and evidence from GATT and NAFTA. National Bureau of Economic Research.
Chicago-viite (17. p.)Kowalczyk, Carsten, ja Donald Davis. Tariff Phase-outs: Theory and Evidence from GATT and NAFTA. Cambridge: National Bureau of Economic Research, 1995.
MLA-viite (9. p.)Kowalczyk, Carsten, ja Donald Davis. Tariff Phase-outs: Theory and Evidence from GATT and NAFTA. National Bureau of Economic Research, 1995.
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