Doris, E. (1991). Doing what scientists do: Children learn to investigate their world. Heinemann.
Citace podle Chicago (17th ed.)Doris, Ellen. Doing What Scientists Do: Children Learn to Investigate Their World. Portsmouth: Heinemann, 1991.
Citace podle MLA (9th ed.)Doris, Ellen. Doing What Scientists Do: Children Learn to Investigate Their World. Heinemann, 1991.
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