DUN. (2021). Cambridge Lower Secondary Maths Sta. Harper Collins Publisher.
Lua i Stíl Chicago (17ú heag.)DUN. Cambridge Lower Secondary Maths Sta. Ireland: Harper Collins Publisher, 2021.
Lua MLA (9ú heag.)DUN. Cambridge Lower Secondary Maths Sta. Harper Collins Publisher, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.