Erber, E. (1970). Urban planning in transition. Grossman.
Lua i Stíl Chicago (17ú heag.)Erber, Ernest. Urban Planning in Transition. New York: Grossman, 1970.
Lua MLA (9ú heag.)Erber, Ernest. Urban Planning in Transition. Grossman, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.