Cita APA (7a ed.)

Turner, F. J. (1985). The Significance of the Frontier in American History. Frederick Ungar.

Cita Chicago Style (17a ed.)

Turner, Frederic Jackson. The Significance of the Frontier in American History. New York, Estados Unidos: Frederick Ungar, 1985.

Cita MLA (9a ed.)

Turner, Frederic Jackson. The Significance of the Frontier in American History. Frederick Ungar, 1985.