एपीए उद्धरण

World Bank. (1998). African development indicators 1998/1999. The World Bank.

शिकागो स्टाइल उद्धरण

World Bank. African Development Indicators 1998/1999. Washington DC: The World Bank, 1998.

एमएलए उद्धरण

World Bank. African Development Indicators 1998/1999. The World Bank, 1998.