Aish, F., & Tomlinson, J. (2012). Collins grammar for IELTS. Collins.
Lua i Stíl Chicago (17ú heag.)Aish, Fiona, agus Jo Tomlinson. Collins Grammar for IELTS. London: Collins, 2012.
Lua MLA (9ú heag.)Aish, Fiona, agus Jo Tomlinson. Collins Grammar for IELTS. Collins, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.