APA (7th ed.) Citation

Dawkins, R. (2009). The greatest show on earth: The evidence for evolution. Bantam.

Chicago Style (17th ed.) Citation

Dawkins, Richard. The Greatest Show on Earth: The Evidence for Evolution. London [etc.]: Bantam, 2009.

MLA (9th ed.) Citation

Dawkins, Richard. The Greatest Show on Earth: The Evidence for Evolution. Bantam, 2009.

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