Cita APA (7a ed.)

Darwin, C. (2013). The expression of the emotions in man and animals. Cambridge University.

Cita Chicago Style (17a ed.)

Darwin, Charles. The Expression of the Emotions in Man and Animals. London: Cambridge University, 2013.

Cita MLA (9a ed.)

Darwin, Charles. The Expression of the Emotions in Man and Animals. Cambridge University, 2013.