Turner, F. J. (1991). The significance of the frontier in American history. New York: Continuum.
Čikaški stil citiranjaTurner, Frederick Jackson. The Significance of the Frontier in American History. New York: Continuum, 1991.
MLA način citiranjaTurner, Frederick Jackson. The Significance of the Frontier in American History. New York: Continuum, 1991.
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