HORNBY, A. (1982). GUIDE TOPATTERNS AND USAGE IN ENGLISH. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)HORNBY, A.S. GUIDE TOPATTERNS AND USAGE IN ENGLISH. Oxford University Press, 1982.
Lua MLA (8ú heag.)HORNBY, A.S. GUIDE TOPATTERNS AND USAGE IN ENGLISH. Oxford University Press, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.