O'Sullivan, A. Urban economics (Ninth edition.).
Lua i Stíl Chicago (17ú heag.)O'Sullivan, Arthur. Urban Economics. Ninth edition.
Lua MLA (9ú heag.)O'Sullivan, Arthur. Urban Economics. Ninth edition.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.