Douglas, I. (2012). Cities: An environmental history. I.B. Tauris.
Lua i Stíl Chicago (17ú heag.)Douglas, Ian. Cities: An Environmental History. London ; New York: I.B. Tauris, 2012.
Lua MLA (9ú heag.)Douglas, Ian. Cities: An Environmental History. I.B. Tauris, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.