Thomson and Martinet. Practical English Grammar (4th.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Thomson and Martinet. Practical English Grammar. 4th. New Delhi New Delhi: Oxford University Press.
Lua MLA (9ú heag.)Thomson and Martinet. Practical English Grammar. 4th. Oxford University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.