The World Bank. (2000). Trade blocs. Washington, D. C: The World Bank.
Trích dẫn kiểu ChicagoThe World Bank. Trade Blocs. Washington, D. C: The World Bank, 2000.
MLA引文The World Bank. Trade Blocs. Washington, D. C: The World Bank, 2000.
警告：这些引文格式不一定是100％准确.