Keesing, D. B. (1979). Trade policy for developing countries: A background study for world development report, 1979. World Bank.
Lua i Stíl Chicago (17ú heag.)Keesing, Donald B. Trade Policy for Developing Countries: A Background Study for World Development Report, 1979. Washington, D.C: World Bank, 1979.
Lua MLA (9ú heag.)Keesing, Donald B. Trade Policy for Developing Countries: A Background Study for World Development Report, 1979. World Bank, 1979.
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