Kamii, C., & DeVries, R. (1980). Group games in early education: Implications of Piaget's theory. National Association for the Education of Young Children.
Παραπομπή σε μορφή Chicago (17η εκδ.)Kamii, Constance, και Rheta DeVries. Group Games in Early Education: Implications of Piaget's Theory. Washington: National Association for the Education of Young Children, 1980.
Παραπομπή σε μορφή MLA (9th εκδ.)Kamii, Constance, και Rheta DeVries. Group Games in Early Education: Implications of Piaget's Theory. National Association for the Education of Young Children, 1980.
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