World Bank. (2000). African Development Indicators 2000. the international bank for reconstruction and development.
芝加哥风格引文World Bank. African Development Indicators 2000. Washington: the international bank for reconstruction and development, 2000.
MLA引文World Bank. African Development Indicators 2000. the international bank for reconstruction and development, 2000.
警告：这些引文格式不一定是100％准确.