David Rayner; Jim Fensom. (2014). International Mathematics for Cambridge IGCSERG (Pap/Cdr.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)David Rayner; Jim Fensom. International Mathematics for Cambridge IGCSERG. Pap/Cdr. Oxford University Press, 2014.
Lua MLA (9ú heag.)David Rayner; Jim Fensom. International Mathematics for Cambridge IGCSERG. Pap/Cdr. Oxford University Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.