APA (7th ed.) Citation

Darwin, C., Burkhardt, F., & Smith, S. (1985). The correspondence of Charles Darwin. Cambridge University Press.

Chicago Style (17th ed.) Citation

Darwin, Charles, Frederick Burkhardt, and Sydney Smith. The Correspondence of Charles Darwin. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1985.

MLA (9th ed.) Citation

Darwin, Charles, et al. The Correspondence of Charles Darwin. Cambridge University Press, 1985.