Burchfield, R. W. (1982). A supplement to the Oxford English dictionary. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Burchfield, Robert William. A Supplement to the Oxford English Dictionary. Oxford: Clarendon Press, 1982.
Lua MLA (8ú heag.)Burchfield, Robert William. A Supplement to the Oxford English Dictionary. Clarendon Press, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.