APA (7th ed.) Zitazioa
World Bank & ebrary, Inc. (2008). The World Bank Group guarantee instruments 1990-2007: An independent evaluation. World Bank.
Chicago Style (17th ed.) Zitazioa
World Bank eta Inc ebrary. The World Bank Group Guarantee Instruments 1990-2007: An Independent Evaluation. Washington DC: World Bank, 2008.
MLA (9th ed.) Zitazioa
World Bank eta Inc ebrary. The World Bank Group Guarantee Instruments 1990-2007: An Independent Evaluation. World Bank, 2008.
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