APA
World Bank Group, . (1999). The World Bank group publications catalog. Washington, DC: World Bank.
Chicago
World Bank Group, . 1999. The World Bank group publications catalog. Washington, DC: World Bank.
Harvard
World Bank Group, . (1999). The World Bank group publications catalog. Washington, DC: World Bank.
MLA
World Bank Group, . The World Bank group publications catalog. Washington, DC: World Bank. 1999.