APA (7th ed.) Citation

Darwin, C., & Burkhardt, F. (2008). Origins: Selected letters of Charles Darwin 1822-1859 (Anniversary edition.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Frederick Burkhardt. Origins: Selected Letters of Charles Darwin 1822-1859. Anniversary edition. Cambridge, UK ; New York: Cambridge University Press, 2008.

MLA (8th ed.) Citation

Darwin, Charles, and Frederick Burkhardt. Origins: Selected Letters of Charles Darwin 1822-1859. Anniversary edition. Cambridge University Press, 2008.