APA (7th ed.) Zitazioa
World Bank. Development Data Group, World Bank, & ebrary, Inc. (2008). Little data book on external debt. World Bank.
Chicago Style (17th ed.) Zitazioa
World Bank. Development Data Group, World Bank, eta Inc ebrary. Little Data Book on External Debt. Washington: World Bank, 2008.
MLA (9th ed.) Zitazioa
World Bank. Development Data Group, et al. Little Data Book on External Debt. World Bank, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.