The World Bank. (2007). The little data book 2007. Washington, D.C: World Bank.
Trích dẫn kiểu ChicagoThe World Bank. The Little Data Book 2007. Washington, D.C: World Bank, 2007.
MLA引文The World Bank. The Little Data Book 2007. Washington, D.C: World Bank, 2007.
警告：这些引文格式不一定是100％准确.