Aitchison, J. (1994). Cassell guide to written English. Cassell.
Lua i Stíl Chicago (17ú heag.)Aitchison, James. Cassell Guide to Written English. London: Cassell, 1994.
Lua MLA (8ú heag.)Aitchison, James. Cassell Guide to Written English. Cassell, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.