Sky, T. (2011). The National Road and the difficult path to sustainable national investment. University of Delaware Press.
Citace podle Chicago (17th ed.)Sky, Theodore. The National Road and the Difficult Path to Sustainable National Investment. Newark: University of Delaware Press, 2011.
Citace podle MLA (9th ed.)Sky, Theodore. The National Road and the Difficult Path to Sustainable National Investment. University of Delaware Press, 2011.
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