Clark, D. (1996). Urban world: Global city. Routledge.
Cita Chicago (17th ed.)Clark, David. Urban World: Global City. London: Routledge, 1996.
Cita MLA (9th ed.)Clark, David. Urban World: Global City. Routledge, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.