David, T. (1999). Young children learning. Paul Chapman.
Lua i Stíl Chicago (17ú heag.)David, Tricia. Young Children Learning. London: Paul Chapman, 1999.
Lua MLA (8ú heag.)David, Tricia. Young Children Learning. Paul Chapman, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.