Lua APA (7ú heag.)

O'Sullivan, A. (1996). Urban economics (3rd ed.). Irwin.

Lua i Stíl Chicago (17ú heag.)

O'Sullivan, Arthur. Urban Economics. 3rd ed. Chicago: Irwin, 1996.

Lua MLA (9ú heag.)

O'Sullivan, Arthur. Urban Economics. 3rd ed. Irwin, 1996.

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