Evans V. Virginia & Dooley J. Jenny. (2001). Enterprise 4. Intermediate: Coursebook. Express Publishing, 2001.
Lua i Stíl Chicago (17ú heag.)Evans V. Virginia agus Dooley J. Jenny. Enterprise 4. Intermediate: Coursebook. Express Publishing, 2001, 2001.
Lua MLA (9ú heag.)Evans V. Virginia agus Dooley J. Jenny. Enterprise 4. Intermediate: Coursebook. Express Publishing, 2001, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.