LONG, P. (2016). Cambridge international AS and A Level IT: Coursebook. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)LONG, Paul. Cambridge International AS and A Level IT: Coursebook. Cambridge University Press, 2016.
Lua MLA (9ú heag.)LONG, Paul. Cambridge International AS and A Level IT: Coursebook. Cambridge University Press, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.