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.101
"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.
Jean Baptiste Say, Charles Robert Prinsep (1857). “A Treatise on Political Economy; Or, The Production, Distribution, and Consumption of Wealth”, p.433