World Bank & ebrary, Inc. (2011). The little data book on private sector development: 2011. World Bank.
芝加哥风格引文World Bank 与 Inc ebrary. The Little Data Book on Private Sector Development: 2011. Washington, D.C.: World Bank, 2011.
MLA引文World Bank 与 Inc ebrary. The Little Data Book on Private Sector Development: 2011. World Bank, 2011.
警告：这些引文格式不一定是100％准确.