(2005). How much is too much?: The influence of preschool centers on children's social and cognitive development. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)How Much Is Too Much?: The Influence of Preschool Centers on Children's Social and Cognitive Development. Cambridge, Mass: National Bureau of Economic Research, 2005.
MLA-Zitierstil (9. Ausg.)How Much Is Too Much?: The Influence of Preschool Centers on Children's Social and Cognitive Development. National Bureau of Economic Research, 2005.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.