APA (7th ed.) Citation

Darwin, C., & Ridley, M. (1987). The Darwin reader (1st American ed.). Norton.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Mark Ridley. The Darwin Reader. 1st American ed. New York: Norton, 1987.

MLA (9th ed.) Citation

Darwin, Charles, and Mark Ridley. The Darwin Reader. 1st American ed. Norton, 1987.