Dyfyniad APA

World Bank. Socio-Economic Data Division. (1996). Social indicators of development 1996. World Bank.

Dyfyniad Arddull Chicago

World Bank. Socio-Economic Data Division. Social Indicators of Development 1996. Washington, D.C.: World Bank, 1996.

Dyfyniad MLA

World Bank. Socio-Economic Data Division. Social Indicators of Development 1996. World Bank, 1996.

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