Collins, R. C., Waters, E. B., Dotson, A. B., & Beaumont, C. E. (1991). America's downtowns: Growth, politics & preservation. Preservation Press.
Lua i Stíl Chicago (17ú heag.)Collins, Richard C., Elizabeth B. Waters, Anthony Bruce Dotson, agus Constance Epton Beaumont. America's Downtowns: Growth, Politics & Preservation. Washington, D.C.: Preservation Press, 1991.
Lua MLA (8ú heag.)Collins, Richard C., et al. America's Downtowns: Growth, Politics & Preservation. Preservation Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.