Battersby, A. (1999). English: Student's book 3. MacMillan.
Lua i Stíl Chicago (17ú heag.)Battersby, Alan. English: Student's Book 3. Oxford: MacMillan, 1999.
Lua MLA (9ú heag.)Battersby, Alan. English: Student's Book 3. MacMillan, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.