Hollingworth, H. L. (1927). Mental growth and decline: A survey of developmental psychology. D. Appleton and company.
Chicago-referens (17:e uppl.)Hollingworth, Harry L. Mental Growth and Decline: A Survey of Developmental Psychology. New York, London: D. Appleton and company, 1927.
MLA-referens (8:e uppl.)Hollingworth, Harry L. Mental Growth and Decline: A Survey of Developmental Psychology. D. Appleton and company, 1927.
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