ebrary, Inc. (2004). African development indicators 2004. World Bank.
Chicagoスタイル(17版)引用形式ebrary, Inc. African Development Indicators 2004. Washington, D.C.: World Bank, 2004.
MLA(9版)引用形式ebrary, Inc. African Development Indicators 2004. World Bank, 2004.
警告: この引用は必ずしも正確ではありません.