George, H. (1938). Progress and poverty: An inquiry into the cause of industrial depressions and of increase of want with increase of wealth. Modern Library.
Citazione stile Chigago Style (17a edizione)George, Henry. Progress and Poverty: An Inquiry into the Cause of Industrial Depressions and of Increase of Want with Increase of Wealth. New York: Modern Library, 1938.
Citatione MLA (9a ed.)George, Henry. Progress and Poverty: An Inquiry into the Cause of Industrial Depressions and of Increase of Want with Increase of Wealth. Modern Library, 1938.
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