Anghileri, J. (2007). Developing number sense: Progression in the middle years. Continuum.
Lua i Stíl Chicago (17ú heag.)Anghileri, Julia. Developing Number Sense: Progression in the Middle Years. London: Continuum, 2007.
Lua MLA (9ú heag.)Anghileri, Julia. Developing Number Sense: Progression in the Middle Years. Continuum, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.