APA (7th ed.) Citation

World Bank. Development Data Group, World Bank, & ebrary, Inc. (2008). Little data book on external debt. World Bank.

Chicago Style (17th ed.) Citation

World Bank. Development Data Group, World Bank, and Inc ebrary. Little Data Book on External Debt. Washington: World Bank, 2008.

MLA (9th ed.) Citation

World Bank. Development Data Group, et al. Little Data Book on External Debt. World Bank, 2008.