World Bank & ebrary, Inc. (2009). World Development Indicators. World Bank Publications.
芝加哥风格引文World Bank 与 Inc ebrary. World Development Indicators. Washington: World Bank Publications, 2009.
MLA引文World Bank 与 Inc ebrary. World Development Indicators. World Bank Publications, 2009.
警告：这些引文格式不一定是100％准确.