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