Walker, M. (1983). The literature of the United States of America. Macmillan.
Lua i Stíl Chicago (17ú heag.)Walker, Marshall. The Literature of the United States of America. London: Macmillan, 1983.
Lua MLA (8ú heag.)Walker, Marshall. The Literature of the United States of America. Macmillan, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.