Baigent, M. (2004). Natural English: Reading writing skills : upper-intermediate resource book. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Baigent, Maggie. Natural English: Reading Writing Skills : Upper-intermediate Resource Book. Oxford: Oxford University Press, 2004.
Lua MLA (8ú heag.)Baigent, Maggie. Natural English: Reading Writing Skills : Upper-intermediate Resource Book. Oxford University Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.