Lua APA (7ú heag.)

World Bank. (2013). World development indicators 2013. World Bank.

Lua i Stíl Chicago (17ú heag.)

World Bank. World Development Indicators 2013. Washington, DC: World Bank, 2013.

Lua MLA (9ú heag.)

World Bank. World Development Indicators 2013. World Bank, 2013.

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