APA (7th ed.) Zitazioa
Cronon, W. (1991). Nature's metropolis: Chicago and the great west. W.W.Norton & Company.
Chicago Style (17th ed.) Zitazioa
Cronon, William. Nature's Metropolis: Chicago and the Great West. New York: W.W.Norton & Company, 1991.
MLA (9th ed.) Zitazioa
Cronon, William. Nature's Metropolis: Chicago and the Great West. W.W.Norton & Company, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.