International bank for reconstruction and development. (1989). Sub-Saharan Africa: From crisis to sustainable growth. The World Bank.
Cita Chicago (17th ed.)International bank for reconstruction and development. Sub-Saharan Africa: From Crisis to Sustainable Growth. Washington, D.C: The World Bank, 1989.
Cita MLA (9th ed.)International bank for reconstruction and development. Sub-Saharan Africa: From Crisis to Sustainable Growth. The World Bank, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.