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Dyfyniad Arddull ChicagoWorld Bank, Rudiger Dornbusch, and F. L. C. H. Helmers. The Open Economy: Tools for Policymakers in Developing Countries. New York: Published for the World Bank, Oxford University Press, 1988.
Dyfyniad MLAWorld Bank, et al. The Open Economy: Tools for Policymakers in Developing Countries. Published for the World Bank, Oxford University Press, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.