World Bank. (2006). Where is the wealth of nations?: Measuring capital for the 21st century. Washington, D.C: World Bank.
استشهاد بنمط شيكاغوWorld Bank. Where Is the Wealth of Nations?: Measuring Capital for the 21st Century. Washington, D.C: World Bank, 2006.
MLA استشهادWorld Bank. Where Is the Wealth of Nations?: Measuring Capital for the 21st Century. Washington, D.C: World Bank, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.