APA (7th ed.) Zitazioa

World Bank. (2012). International financial statistics: Yearbook. World Bank.

Chicago Style (17th ed.) Zitazioa

World Bank. International Financial Statistics: Yearbook. Washington, D.C.: World Bank, 2012.

MLA (9th ed.) Zitazioa

World Bank. International Financial Statistics: Yearbook. World Bank, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.