Dyfyniad APA

The World Bank. (2009). The little data book 2009. Washington, D.C: The World Bank.

Dyfyniad Arddull Chicago

The World Bank. The Little Data Book 2009. Washington, D.C: The World Bank, 2009.

Dyfyniad MLA

The World Bank. The Little Data Book 2009. Washington, D.C: The World Bank, 2009.

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