Cita APA (7th ed.)

(2014). World development indicators, 2014. The World Bank.

Cita Chicago (17th ed.)

World Development Indicators, 2014. Washington, District of Columbia: The World Bank, 2014.

Cita MLA (9th ed.)

World Development Indicators, 2014. The World Bank, 2014.

Atenció: Aquestes cites poden no estar 100% correctes.