North, D. C. (1966). The economic growth of the United States: 1790-1860. Norton & company.
Lua i Stíl Chicago (17ú heag.)North, Douglass C. The Economic Growth of the United States: 1790-1860. New York: Norton & company, 1966.
Lua MLA (8ú heag.)North, Douglass C. The Economic Growth of the United States: 1790-1860. Norton & company, 1966.
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