Não informado. (1948). Young children. National Association for the Education of Young Children.
Chicago-Zitierstil (17. Ausg.)Não informado. Young Children. Washington: National Association for the Education of Young Children, 1948.
MLA-Zitierstil (8. Ausg.)Não informado. Young Children. National Association for the Education of Young Children, 1948.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.