George, H. (1939). Progress and poverty: An inquiry into the cause of industrial depressions, and of increase of want with increase of wealth ... the remedy ([50th anniversary ed.].). Robert Schalkenback Foundation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)George, Henry. Progress and Poverty: An Inquiry into the Cause of Industrial Depressions, and of Increase of Want with Increase of Wealth ... the Remedy. [50th anniversary ed.]. New York: Robert Schalkenback Foundation, 1939.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)George, Henry. Progress and Poverty: An Inquiry into the Cause of Industrial Depressions, and of Increase of Want with Increase of Wealth ... the Remedy. [50th anniversary ed.]. Robert Schalkenback Foundation, 1939.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.