Bardo, J. W., & Hartman, J. J. (1982). Urban sociology: A systematic introduction. F.E. Peacock.
Lua i Stíl Chicago (17ú heag.)Bardo, John W., agus John J. Hartman. Urban Sociology: A Systematic Introduction. Itasca, Ill.: F.E. Peacock, 1982.
Lua MLA (9ú heag.)Bardo, John W., agus John J. Hartman. Urban Sociology: A Systematic Introduction. F.E. Peacock, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.