Gardner, B. D. (1964). Development in early childhood: The preschool years. Happer and Row.
Citace podle Chicago (17th ed.)Gardner, Bruce D. Development in Early Childhood: The Preschool Years. New York: Happer and Row, 1964.
Citace podle MLA (9th ed.)Gardner, Bruce D. Development in Early Childhood: The Preschool Years. Happer and Row, 1964.
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