Hall, T., & Barrett, H. L. (2012). Urban geography (4th ed.). Routledge.
Lua i Stíl Chicago (17ú heag.)Hall, Tim, agus Heather L. Barrett. Urban Geography. 4th ed. Milton Park, Abingdon, Oxon: Routledge, 2012.
Lua MLA (9ú heag.)Hall, Tim, agus Heather L. Barrett. Urban Geography. 4th ed. Routledge, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.