Clementson, T. (2005). Natural english. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Clementson, Theresa. Natural English. Oxford: Oxford University Press, 2005.
Lua MLA (8ú heag.)Clementson, Theresa. Natural English. Oxford University Press, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.