Clark, D. (1996). Urban world: Global city. Routledge.
Chicago Style (17th ed.) ZitazioaClark, David. Urban World: Global City. London: Routledge, 1996.
MLA (9th ed.) ZitazioaClark, David. Urban World: Global City. Routledge, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.