Van Cleef, E. (1970). Cities in action. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)Van Cleef, Eugene. Cities in Action. New York: Pergamon Press, 1970.
Lua MLA (9ú heag.)Van Cleef, Eugene. Cities in Action. Pergamon Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.