Kail, R. V., & Cavanaugh, J. C. (2019). Human development: A life-span view (Eighth edition.). Cengage.
Citace podle Chicago (17th ed.)Kail, Robert V., a John C. Cavanaugh. Human Development: A Life-span View. Eighth edition. Australia: Cengage, 2019.
Citace podle MLA (9th ed.)Kail, Robert V., a John C. Cavanaugh. Human Development: A Life-span View. Eighth edition. Cengage, 2019.
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