Gist, N. P., & Fava, S. F. (1964). Urban society (5th ed.). Crowell.
Lua i Stíl Chicago (17ú heag.)Gist, Noel Pitts, agus Sylvia Fleis Fava. Urban Society. 5th ed. New York: Crowell, 1964.
Lua MLA (9ú heag.)Gist, Noel Pitts, agus Sylvia Fleis Fava. Urban Society. 5th ed. Crowell, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.