APA aipamena

Turner, F. J. (1991). The significance of the frontier in American history. New York: Continuum.

Chicago Style aipamena

Turner, Frederick Jackson. The Significance of the Frontier in American History. New York: Continuum, 1991.

MLA aipamena

Turner, Frederick Jackson. The Significance of the Frontier in American History. New York: Continuum, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.