World Bank & ebrary, Inc. (2008). The little data book. World Bank.
芝加哥风格引文World Bank 与 Inc ebrary. The Little Data Book. Washington, D. C.: World Bank, 2008.
MLA引文World Bank 与 Inc ebrary. The Little Data Book. World Bank, 2008.
警告：这些引文格式不一定是100％准确.