International Bank for Reconstruction and Development & United Nations Development Programme. (1989). African economic and financial data. United Nations Development Programme.
Цитирование в стиле Чикаго (17-е изд.)International Bank for Reconstruction and Development и United Nations Development Programme. African Economic and Financial Data. New York: United Nations Development Programme, 1989.
Цитирование MLA (9-е изд.)International Bank for Reconstruction and Development и United Nations Development Programme. African Economic and Financial Data. United Nations Development Programme, 1989.
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