(2011). World development indicators 2011. The World Bank.
Chicago Style (17th ed.) CitationWorld Development Indicators 2011. The World Bank, 2011.
MLA引文World Development Indicators 2011. The World Bank, 2011.
警告:这些引文格式不一定是100%准确.
(2011). World development indicators 2011. The World Bank.
Chicago Style (17th ed.) CitationWorld Development Indicators 2011. The World Bank, 2011.
MLA引文World Development Indicators 2011. The World Bank, 2011.