Darwin, C., Ekman, P., & Prodger, P. (1999). The expression of the emotions in man and animals: Charles Darwin (3d ed. / with an introd., afterword and comm. by Paul Ekman. Essay on the history of the illustrations by Philip Prodger.). Harper Collins Publ..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDarwin, Charles, Paul Ekman, और Philip Prodger. The Expression of the Emotions in Man and Animals: Charles Darwin. 3d ed. / with an introd., afterword and comm. by Paul Ekman. Essay on the history of the illustrations by Philip Prodger. London: Harper Collins Publ., 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDarwin, Charles, et al. The Expression of the Emotions in Man and Animals: Charles Darwin. 3d ed. / with an introd., afterword and comm. by Paul Ekman. Essay on the history of the illustrations by Philip Prodger. Harper Collins Publ., 1999.