Lovell, K. (1966). The growth of basic mathematical and scientific concepts in children (5th ed.). Hodder and Stoughton.
Citace podle Chicago (17th ed.)Lovell, K. The Growth of Basic Mathematical and Scientific Concepts in Children. 5th ed. London: Hodder and Stoughton, 1966.
Citace podle MLA (9th ed.)Lovell, K. The Growth of Basic Mathematical and Scientific Concepts in Children. 5th ed. Hodder and Stoughton, 1966.
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