Hobson, A. (2001). The Oxford dictionary of difficult words. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hobson, Archie. The Oxford Dictionary of Difficult Words. New York: Oxford University Press, 2001.
Lua MLA (8ú heag.)Hobson, Archie. The Oxford Dictionary of Difficult Words. Oxford University Press, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.