Mason, J. Thinking Mathematically (2.). Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Mason, J.;Burton. Thinking Mathematically. 2. Pearson Education UK.
Lua MLA (8ú heag.)Mason, J.;Burton. Thinking Mathematically. 2. Pearson Education UK.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.