BELL, G. (1973). Urban Environments And Human Behavior. s.n.
Lua i Stíl Chicago (17ú heag.)BELL, Gwen. Urban Environments And Human Behavior. s.n, 1973.
Lua MLA (8ú heag.)BELL, Gwen. Urban Environments And Human Behavior. s.n, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.