Cita APA (7th ed.)
Turner, F. J. (1961). Frontier and section: Selected essays. Prentice Hall.
Cita Chicago (17th ed.)
Turner, Frederick Jackson. Frontier and Section: Selected Essays. New York: Prentice Hall, 1961.
Cita MLA (9th ed.)
Turner, Frederick Jackson. Frontier and Section: Selected Essays. Prentice Hall, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.