National Council of Teachers of Mathematics. (1994). Teaching children mathematics. National Council of Teachers of Mathematics.
Lua i Stíl Chicago (17ú heag.)National Council of Teachers of Mathematics. Teaching Children Mathematics. Reston, Va: National Council of Teachers of Mathematics, 1994.
Lua MLA (9ú heag.)National Council of Teachers of Mathematics. Teaching Children Mathematics. National Council of Teachers of Mathematics, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.