Cita APA (7th ed.)
World Bank & ebrary, Inc. (2007). The little data book 2007. World Bank.
Cita Chicago (17th ed.)
World Bank i Inc ebrary. The Little Data Book 2007. Washington, D.C.: World Bank, 2007.
Cita MLA (9th ed.)
World Bank i Inc ebrary. The Little Data Book 2007. World Bank, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.