Greenall, S. (1997). Reward: Elementary. Student's book. Macmillan Heinemann.
Lua i Stíl Chicago (17ú heag.)Greenall, Simon. Reward: Elementary. Student's Book. Oxford: Macmillan Heinemann, 1997.
Lua MLA (9ú heag.)Greenall, Simon. Reward: Elementary. Student's Book. Macmillan Heinemann, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.