Dyfyniad APA

International Bank for Reconstruction and Development. (2010). World development indicators 2010. World Bank.

Dyfyniad Arddull Chicago

International Bank for Reconstruction and Development. World Development Indicators 2010. Washington, D.C: World Bank, 2010.

Dyfyniad MLA

International Bank for Reconstruction and Development. World Development Indicators 2010. World Bank, 2010.

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