International Bank for Reconstruction and Development / The World Bank. (1990). The Long-term perspective study of Sub-Saharan Africa: Background papers. World Bank.
Citace podle Chicago (17th ed.)International Bank for Reconstruction and Development / The World Bank. The Long-term Perspective Study of Sub-Saharan Africa: Background Papers. Washington: World Bank, 1990.
Citace podle MLA (9th ed.)International Bank for Reconstruction and Development / The World Bank. The Long-term Perspective Study of Sub-Saharan Africa: Background Papers. World Bank, 1990.
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