Dyfyniad APA

World Bank. (2010). Africa Development Indicators 2010. The World Bank.

Dyfyniad Arddull Chicago

World Bank. Africa Development Indicators 2010. Washington, D.C: The World Bank, 2010.

Dyfyniad MLA

World Bank. Africa Development Indicators 2010. The World Bank, 2010.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.