Cita APA

The World Bank. (2008). World development indicators 2008. Washington, DC: World Bank.

Chicago Style Citation

The World Bank. World Development Indicators 2008. Washington, DC: World Bank, 2008.

Cita MLA

The World Bank. World Development Indicators 2008. Washington, DC: World Bank, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.