Não informado. (1967). Psychology of Learning and Motivation. Academic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Psychology of Learning and Motivation. San Diego, Calif: Academic Press, 1967.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Psychology of Learning and Motivation. Academic Press, 1967.
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