APA (7th ed.) Citation

Darwin, C., & Burkhardt, F. (2019). The correspondence of Charles Darwin. Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Frederick Burkhardt. The Correspondence of Charles Darwin. Cambridge [u.a.]: Cambridge Univ. Press, 2019.

MLA (9th ed.) Citation

Darwin, Charles, and Frederick Burkhardt. The Correspondence of Charles Darwin. Cambridge Univ. Press, 2019.