Dyfyniad APA

United Nations Development Programme & World Bank. (2006). ًWorld Development Indicators 2006. United Nations Development Programme ; World Bank.

Dyfyniad Arddull Chicago

United Nations Development Programme and World Bank. ًWorld Development Indicators 2006. New York, N.Y. : Washington, D.C.: United Nations Development Programme ; World Bank, 2006.

Dyfyniad MLA

United Nations Development Programme and World Bank. ًWorld Development Indicators 2006. United Nations Development Programme ; World Bank, 2006.

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