Cita APA (7a ed.)

Darwin, C. R. (1872). The expression of the emotions in man and animals. John Murray.

Cita Chicago Style (17a ed.)

Darwin, Charles Robert. The Expression of the Emotions in Man and Animals. London: John Murray, 1872.

Cita MLA (9a ed.)

Darwin, Charles Robert. The Expression of the Emotions in Man and Animals. John Murray, 1872.