World Bank & World Bank. (2006). Where is the wealth of nations: Measuring capital for the 21st century. The World Bank.

World Bank and World Bank. Where Is the Wealth of Nations: Measuring Capital for the 21st Century. Washington, D.C.: The World Bank, 2006.

World Bank and World Bank. Where Is the Wealth of Nations: Measuring Capital for the 21st Century. The World Bank, 2006.