Harris, D. (1996). A Sosiety of signs ? Routledge.
Lua i Stíl Chicago (17ú heag.)Harris, David. A Sosiety of Signs ? Routledge, 1996.
Lua MLA (8ú heag.)Harris, David. A Sosiety of Signs ? Routledge, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.