Harlan, J. D., & Rivkin, M. S. (2000). Science experiences for the early childhood years: An integrated approach (7th ed.). Merrill.
Citace podle Chicago (17th ed.)Harlan, Jean Durgin, a Mary S. Rivkin. Science Experiences for the Early Childhood Years: An Integrated Approach. 7th ed. Upper Saddle River, N.J: Merrill, 2000.
Citace podle MLA (9th ed.)Harlan, Jean Durgin, a Mary S. Rivkin. Science Experiences for the Early Childhood Years: An Integrated Approach. 7th ed. Merrill, 2000.
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