Hughes, G. S. (1981). A Handbook of Classroom English. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hughes, Glyn S. A Handbook of Classroom English. Oxford University Press, 1981.
Lua MLA (8ú heag.)Hughes, Glyn S. A Handbook of Classroom English. Oxford University Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.