Jean Baptiste Say, Charles Robert Prinsep (1857). “A Treatise on Political Economy; Or, The Production, Distribution, and Consumption of Wealth”, p.439
Adam Smith, Jean-Baptiste Say, J.R. McCulloch (2013). “History of Economic Theory: The Selected Writings of Adam Smith, Jean-Baptiste Say, and J.R. McCulloch”, p.106, Coventry House Publishing
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Jean Baptiste Say, Charles Robert Prinsep (1857). “A Treatise on Political Economy; Or, The Production, Distribution, and Consumption of Wealth”, p.221
Jean Baptiste Say, Charles Robert Prinsep (1857). “A Treatise on Political Economy; Or, The Production, Distribution, and Consumption of Wealth”, p.138
Jean Baptiste Say (1821). “A treatise on political economy; or, The production, distribution, and consumption of wealth. Tr. by C.R. Prinsep, with notes”, p.152
Jean Baptiste Say, Charles Robert Prinsep (1857). “A Treatise on Political Economy; Or, The Production, Distribution, and Consumption of Wealth”, p.433
"A Treatise On Political Economy". Book by Jean-Baptiste Say. Translated from the Fourth Edition of the French by C.R. Prinsep, M.A. With Notes by the Translator. (Sixth American Edition), Chapter VI, p. 323, 1832.