Styl cytowania APA

World Bank. (2006). Africa Development Indicators 2006: From the World Bank Africa Database. The World Bank.

Styl cytowania Chicago

World Bank. Africa Development Indicators 2006: From the World Bank Africa Database. Washington, D.C: The World Bank, 2006.

Styl cytowania MLA

World Bank. Africa Development Indicators 2006: From the World Bank Africa Database. The World Bank, 2006.