Cita APA (7th ed.)
ebrary, Inc. (2003). The Little data book 2003. The World Bank.
Cita Chicago (17th ed.)
ebrary, Inc. The Little Data Book 2003. Washington, D.C.: The World Bank, 2003.
Cita MLA (9th ed.)
ebrary, Inc. The Little Data Book 2003. The World Bank, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.