Lally, J. (2015). Complete Global Perspectives For Cambridge IGCSE & O Level Second Edition (2nd.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Lally, Jo. Complete Global Perspectives For Cambridge IGCSE & O Level Second Edition. 2nd. UK: Oxford University Press, 2015.
Lua MLA (9ú heag.)Lally, Jo. Complete Global Perspectives For Cambridge IGCSE & O Level Second Edition. 2nd. Oxford University Press, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.