Dyfyniad APA
ebrary, Inc, & World Bank. (2013). Little data book on Africa 2012/2013. World Bank.
Dyfyniad Arddull Chicago
ebrary, Inc, and World Bank. Little Data Book on Africa 2012/2013. Washington, D.C.: World Bank, 2013.
Dyfyniad MLA
ebrary, Inc, and World Bank. Little Data Book on Africa 2012/2013. World Bank, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.