APA (7th ed.) Citation

Darwin, C. R., & Ridley, M. (1994). A Darwin selection. Fontana books.

Chicago Style (17th ed.) Citation

Darwin, Charles Robert, and Mark Ridley. A Darwin Selection. London: Fontana books, 1994.

MLA (9th ed.) Citation

Darwin, Charles Robert, and Mark Ridley. A Darwin Selection. Fontana books, 1994.

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