Simon, J. L. (1998). Economics Against The Grain Julian L. Simon. Edward Elgar.
Lua i Stíl Chicago (17ú heag.)Simon, Julian L. Economics Against The Grain Julian L. Simon. Edward Elgar, 1998.
Lua MLA (8ú heag.)Simon, Julian L. Economics Against The Grain Julian L. Simon. Edward Elgar, 1998.
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