Hopkins, A., & Potter, J. (1998). Look ahead 2 classroom course: Students` book (1a. ed. 9a. reimp.). Longman.
Lua i Stíl Chicago (17ú heag.)Hopkins, Andy, agus Jocelyn Potter. Look Ahead 2 Classroom Course: Students` Book. 1a. ed. 9a. reimp. Madrid: Longman, 1998.
Lua MLA (9ú heag.)Hopkins, Andy, agus Jocelyn Potter. Look Ahead 2 Classroom Course: Students` Book. 1a. ed. 9a. reimp. Longman, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.