World Bank. (2000). African Development Indicators 2000. the international bank for reconstruction and development.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Bank. African Development Indicators 2000. Washington: the international bank for reconstruction and development, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)World Bank. African Development Indicators 2000. the international bank for reconstruction and development, 2000.