IMS Learning Resources. Arithmetic & Algebra - Concept Book. IMS Learning.
Lua i Stíl Chicago (17ú heag.)IMS Learning Resources. Arithmetic & Algebra - Concept Book. Mumbai: IMS Learning.
Lua MLA (9ú heag.)IMS Learning Resources. Arithmetic & Algebra - Concept Book. IMS Learning.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.