APA (7th ed.) Zitazioa

World Bank & ebrary, Inc. (2008). The little data book. World Bank.

Chicago Style (17th ed.) Zitazioa

World Bank eta Inc ebrary. The Little Data Book. Washington, D. C.: World Bank, 2008.

MLA (9th ed.) Zitazioa

World Bank eta Inc ebrary. The Little Data Book. World Bank, 2008.