Clark, D. (1996). Urban world/global city. Routledge.
Lua i Stíl Chicago (17ú heag.)Clark, David. Urban World/global City. London: Routledge, 1996.
Lua MLA (9ú heag.)Clark, David. Urban World/global City. Routledge, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.