National Bureau of Economic Research. (1960). Trends in the American Economy in the 19th century Vol.24: Studies in income and wealth (24.).
استشهاد بنمط شيكاغوNational Bureau of Economic Research. Trends in the American Economy in the 19th Century Vol.24: Studies in Income and Wealth. 24. Princeton University Press, Princeton, 1960.
MLA استشهادNational Bureau of Economic Research. Trends in the American Economy in the 19th Century Vol.24: Studies in Income and Wealth. 24. 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.