The World Bank. (2001). World development indicators. The World Bank.
Chicagoスタイル(17版)引用形式The World Bank. World Development Indicators. United States of America: The World Bank, 2001.
MLA(8版)引用形式The World Bank. World Development Indicators. The World Bank, 2001.
警告: この引用は必ずしも正確ではありません.