APA-Zitierstil (7. Ausg.)

Darwin, C., & Darwin, F. (2010). The expression of the emotions in man and animals (Second edition.). Cambridge University Press.

Chicago-Zitierstil (17. Ausg.)

Darwin, Charles, und Francis Darwin. The Expression of the Emotions in Man and Animals. Second edition. Cambridge: Cambridge University Press, 2010.

MLA-Zitierstil (9. Ausg.)

Darwin, Charles, und Francis Darwin. The Expression of the Emotions in Man and Animals. Second edition. Cambridge University Press, 2010.