APA (7th ed.) Citation

Darwin, C. (2007). The correspondence of Charles Darwin. Darwin Correspondence Project, Univ. Library.

Chicago Style (17th ed.) Citation

Darwin, Charles. The Correspondence of Charles Darwin. Cambridge: Darwin Correspondence Project, Univ. Library, 2007.

MLA (9th ed.) Citation

Darwin, Charles. The Correspondence of Charles Darwin. Darwin Correspondence Project, Univ. Library, 2007.

Warning: These citations may not always be 100% accurate.