Piketty, Thomas (2014). Capital in the Twenty-First Century: A multidimensional approach to the history of capital and social classes. The British Journal of Sociology. 65 (4): 736—747. doi:10.1111/1468-4446.12115. PMID25516350.
Jenks, Jeremy C. (1964). Chapters on the History of Money: Chapter I. Financial Analysts Journal. 20 (2): 95—99. doi:10.2469/faj.v20.n2.95.
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Piketty, Thomas (2014). Capital in the Twenty-First Century: A multidimensional approach to the history of capital and social classes. The British Journal of Sociology. 65 (4): 736—747. doi:10.1111/1468-4446.12115. PMID25516350.