MUMFORD, L. (1961). The City in history. Peguin Books.
Lua i Stíl Chicago (17ú heag.)MUMFORD, LEWIS. The City in History. London: Peguin Books, 1961.
Lua MLA (8ú heag.)MUMFORD, LEWIS. The City in History. Peguin Books, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.