Douglas, I. (2012). Cities: An environmental history. I.B. Tauris.
Chicago-čujuhus (17. p.)Douglas, Ian. Cities: An Environmental History. London ; New York: I.B. Tauris, 2012.
MLA-čujuhus (9. p.)Douglas, Ian. Cities: An Environmental History. I.B. Tauris, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.