Hymes, J. L. (1991). Early childhood education: Twenty years in review, a look at 1971-1990. National Association for the Education of Young Children.
Citace podle Chicago (17th ed.)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.
Citace podle MLA (9th ed.)Hymes, James L. Early Childhood Education: Twenty Years in Review, a Look at 1971-1990. National Association for the Education of Young Children, 1991.
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