Birch, D., & Hooper, K. (2012). Concise Oxford companion to english (4th.). Oxford Univeristy Press.
Lua i Stíl Chicago (17ú heag.)Birch, D., agus K. Hooper. Concise Oxford Companion to English. 4th. United Kingdom: Oxford Univeristy Press, 2012.
Lua MLA (9ú heag.)Birch, D., agus K. Hooper. Concise Oxford Companion to English. 4th. Oxford Univeristy Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.