APA-čujuhus (7. p.)
World Bank & ebrary, Inc. (2006). Africa development indicators 2006. World Bank.
Chicago-čujuhus (17. p.)
World Bank juo Inc ebrary. Africa Development Indicators 2006. Washington, D.C.: World Bank, 2006.
MLA-čujuhus (9. p.)
World Bank juo Inc ebrary. Africa Development Indicators 2006. World Bank, 2006.
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