World Bank. African development indicators. International Bank for Reconstruction and Development / The World Bank.
Chicagoスタイル(17版)引用形式World Bank. African Development Indicators. Washington, D.C.: International Bank for Reconstruction and Development / The World Bank.
MLA(9版)引用形式World Bank. African Development Indicators. International Bank for Reconstruction and Development / The World Bank.
警告: この引用は必ずしも正確ではありません.