From Citizendium, the Citizens' Compendium
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- Gagnon, Joseph E: The Global Outlook for Government Debt over the Next 25 Years: Implications for the Economy and Public Policy, Peterson Institute, June 2011 (Summary)
- MacDonald, James: A Free Nation Deep in Debt: The Financial Roots of Democracy, Princeton University Press, 2006
- Smith, Adam: "Of Public Debts", Book V, Chapter III An Inquiry into the Nature and Causes of the Wealth of Nations, First published 1776, Methuen 1904.