Duff, A., & Maley, A. (1991). Literature. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Duff, Alan, agus Alan Maley. Literature. Oxford: Oxford University Press, 1991.
Lua MLA (9ú heag.)Duff, Alan, agus Alan Maley. Literature. Oxford University Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.