Cadwallader, M. (1996). Urban Geography An Analytical Approach Martin Cadwallader. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Cadwallader, Martin. Urban Geography An Analytical Approach Martin Cadwallader. Prentice Hall, 1996.
Lua MLA (8ú heag.)Cadwallader, Martin. Urban Geography An Analytical Approach Martin Cadwallader. Prentice Hall, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.