Norton, G. R. (1977). Parenting. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Norton, G. Ron. Parenting. Prentice Hall, 1977.
Lua MLA (9ú heag.)Norton, G. Ron. Parenting. Prentice Hall, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.