Gordon, D. L. (2006). Planning twentieth-century capital cities. Routledge.
Lua i Stíl Chicago (17ú heag.)Gordon, David L.A. Planning Twentieth-century Capital Cities. London: Routledge, 2006.
Lua MLA (8ú heag.)Gordon, David L.A. Planning Twentieth-century Capital Cities. Routledge, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.