Lua APA (7ú heag.)
Cronon, W. (1991). Nature's metropolis: Chicago and the great west. W.W.Norton & Company.
Lua i Stíl Chicago (17ú heag.)
Cronon, William. Nature's Metropolis: Chicago and the Great West. New York: W.W.Norton & Company, 1991.
Lua MLA (9ú heag.)
Cronon, William. Nature's Metropolis: Chicago and the Great West. W.W.Norton & Company, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.