APA (7th ed.) Citation

Darwin, C., & Burkhardt, F. (2013). The correspondence of Charles Darwin. Cambridge University Press.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Frederick Burkhardt. The Correspondence of Charles Darwin. Cambridge: Cambridge University Press, 2013.

MLA (9th ed.) Citation

Darwin, Charles, and Frederick Burkhardt. The Correspondence of Charles Darwin. Cambridge University Press, 2013.