APA (7th ed.) Citation

Darwin, C., & Browne, J. The Quotable Darwin. Princeton University press.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Janet Browne. The Quotable Darwin. Princeton: Princeton University press.

MLA (8th ed.) Citation

Darwin, Charles, and Janet Browne. The Quotable Darwin. Princeton University press.

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