Jon Board; Alan Cross. (2014). Cambridge Primary Science Stage 2 Learner's Book. CAMBRIDGE UNIVERSITY PRESS.
Lua i Stíl Chicago (17ú heag.)Jon Board; Alan Cross. Cambridge Primary Science Stage 2 Learner's Book. CAMBRIDGE UNIVERSITY PRESS, 2014.
Lua MLA (9ú heag.)Jon Board; Alan Cross. Cambridge Primary Science Stage 2 Learner's Book. CAMBRIDGE UNIVERSITY PRESS, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.