Não informado. (1994). Teaching Children Mathematics. National Council of Teachers of Mathematics.
Lua i Stíl Chicago (17ú heag.)Não informado. Teaching Children Mathematics. Reston, Va: National Council of Teachers of Mathematics, 1994.
Lua MLA (8ú heag.)Não informado. Teaching Children Mathematics. National Council of Teachers of Mathematics, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.