Cita APA (7th ed.)
Cronon, W. (1991). Nature's metropolis: Chicago and the great west. W.W.Norton & Company.
Cita Chicago (17th ed.)
Cronon, William. Nature's Metropolis: Chicago and the Great West. New York: W.W.Norton & Company, 1991.
Cita MLA (9th ed.)
Cronon, William. Nature's Metropolis: Chicago and the Great West. W.W.Norton & Company, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.