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..
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Darwin, Charles, Paul Ekman, và 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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Darwin, 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.