David Rayner. (2018). Complete Mathematics for Cambridge IGCSE. Fifth Edition. Extended. Oxford.
Lua i Stíl Chicago (17ú heag.)David Rayner. Complete Mathematics for Cambridge IGCSE. Fifth Edition. Extended. UK: Oxford, 2018.
Lua MLA (9ú heag.)David Rayner. Complete Mathematics for Cambridge IGCSE. Fifth Edition. Extended. Oxford, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.