APA (7th ed.) Zitazioa
O'Sullivan, A. (1996). Urban economics (3rd ed.). Irwin.
Chicago Style (17th ed.) Zitazioa
O'Sullivan, Arthur. Urban Economics. 3rd ed. Chicago: Irwin, 1996.
MLA (9th ed.) Zitazioa
O'Sullivan, Arthur. Urban Economics. 3rd ed. Irwin, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.