Não informado. (1983). The British journal of developmental psychology. British Psychological Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The British Journal of Developmental Psychology. Leicester, Inglaterra: British Psychological Society, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The British Journal of Developmental Psychology. British Psychological Society, 1983.
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