Allen, R. (2007). The penguin english dictionary. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Allen, Robert. The Penguin English Dictionary. Penguin Books, 2007.
Lua MLA (8ú heag.)Allen, Robert. The Penguin English Dictionary. Penguin Books, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.