Neuwirth, R. (2006). Shadow cities: A billion squatters, a new urban world. Routledge.
Lua i Stíl Chicago (17ú heag.)Neuwirth, Robert. Shadow Cities: A Billion Squatters, a New Urban World. New York ; London: Routledge, 2006.
Lua MLA (8ú heag.)Neuwirth, Robert. Shadow Cities: A Billion Squatters, a New Urban World. Routledge, 2006.
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