APA
World Bank, World Bank & World Bank. (2001). The World Bank Group directory. Washington, D.C: Information, Technology & Facilities Dept.
Chicago
World Bank, World Bank and World Bank. 2001. The World Bank Group directory. Washington, D.C: Information, Technology & Facilities Dept.
Harvard
World Bank, World Bank and World Bank. (2001). The World Bank Group directory. Washington, D.C: Information, Technology & Facilities Dept.
MLA
World Bank, World Bank and World Bank. The World Bank Group directory. Washington, D.C: Information, Technology & Facilities Dept. 2001.