Weikart, D. P. (1978). The Ypsilanti preschool curriculum demonstration project: Preschool years and longitudinal results. High/Scope Educational Research Foundation.
Citace podle Chicago (17th ed.)Weikart, David P. The Ypsilanti Preschool Curriculum Demonstration Project: Preschool Years and Longitudinal Results. Ypsilanti, Mich: High/Scope Educational Research Foundation, 1978.
Citace podle MLA (8th ed.)Weikart, David P. The Ypsilanti Preschool Curriculum Demonstration Project: Preschool Years and Longitudinal Results. High/Scope Educational Research Foundation, 1978.
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