Darwin, C. (2013). The expression of the emotions in man and animals. Cambridge University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDarwin, Charles. The Expression of the Emotions in Man and Animals. London: Cambridge University, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDarwin, Charles. The Expression of the Emotions in Man and Animals. Cambridge University, 2013.
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