APA
World Bank, . (2002). African development indicators, 2002. Washington, D.C: World Bank.
Chicago
World Bank, . 2002. African development indicators, 2002. Washington, D.C: World Bank.
Harvard
World Bank, . (2002). African development indicators, 2002. Washington, D.C: World Bank.
MLA
World Bank, . African development indicators, 2002. Washington, D.C: World Bank. 2002.