Cita APA (7th ed.)
O'Sullivan, A. (1996). Urban economics (3rd ed.). Irwin.
Cita Chicago (17th ed.)
O'Sullivan, Arthur. Urban Economics. 3rd ed. Chicago: Irwin, 1996.
Cita MLA (9th ed.)
O'Sullivan, Arthur. Urban Economics. 3rd ed. Irwin, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.