ING. (2017). Cambridge Primary Mathematics Second Edition Workbook-4 (Second Edition.). Hodder Education.
Lua i Stíl Chicago (17ú heag.)ING. Cambridge Primary Mathematics Second Edition Workbook-4. Second Edition. London: Hodder Education, 2017.
Lua MLA (9ú heag.)ING. Cambridge Primary Mathematics Second Edition Workbook-4. Second Edition. Hodder Education, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.