Kail, R. V., & Cavanaugh, J. C. (2013). Human development: A life-span view (6th ed.). Wadsworth Cengage Learning.
Citace podle Chicago (17th ed.)Kail, Robert V., a John C. Cavanaugh. Human Development: A Life-span View. 6th ed. Australia: Wadsworth Cengage Learning, 2013.
Citace podle MLA (9th ed.)Kail, Robert V., a John C. Cavanaugh. Human Development: A Life-span View. 6th ed. Wadsworth Cengage Learning, 2013.
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