Swan, M., & Walter, C. The Cambridge english course.
Lua i Stíl Chicago (17ú heag.)Swan, Michael, agus Catherine Walter. The Cambridge English Course.
Lua MLA (8ú heag.)Swan, Michael, agus Catherine Walter. The Cambridge English Course.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.