The World Bank. (2007). World developmet indicators 2007. Washington, D.C: The World Bank.
Chicago Style CitationThe World Bank. World Developmet Indicators 2007. Washington, D.C: The World Bank, 2007.
Cita MLAThe World Bank. World Developmet Indicators 2007. Washington, D.C: The World Bank, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.