Turton, N. (1995). ABC of common grammatical errors. Macmillan India Ltd.
Lua i Stíl Chicago (17ú heag.)Turton, Nigel. ABC of Common Grammatical Errors. Delhi: Macmillan India Ltd, 1995.
Lua MLA (9ú heag.)Turton, Nigel. ABC of Common Grammatical Errors. Macmillan India Ltd, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.