Hymes, J. L. (1991). Early childhood education: Twenty years in review, a look at 1971-1990. National Association for the Education of Young Children.
Chicago-Zitierstil (17. Ausg.)Hymes, James L. Early Childhood Education: Twenty Years in Review, a Look at 1971-1990. Washington, D.C: National Association for the Education of Young Children, 1991.
MLA-Zitierstil (9. Ausg.)Hymes, James L. Early Childhood Education: Twenty Years in Review, a Look at 1971-1990. National Association for the Education of Young Children, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.