McClelland, D. C. (1955). Studies in motivation. Appleton-Century-Crofts.
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Dyfyniad Arddull Chicago
McClelland, David C. Studies in Motivation. New York: Appleton-Century-Crofts, 1955.
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Dyfyniad MLA
McClelland, David C. Studies in Motivation. Appleton-Century-Crofts, 1955.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.