Freedman, M. (1971). American drama in social context. Southern Illinois University Press.
Lua i Stíl Chicago (17ú heag.)Freedman, Morris. American Drama in Social Context. Carbondale: Southern Illinois University Press, 1971.
Lua MLA (9ú heag.)Freedman, Morris. American Drama in Social Context. Southern Illinois University Press, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.