APA (7th ed.) Citation

Sagan. (1997). The demon-haunted world: Science as a candle in the dark. Headline.

Chicago Style (17th ed.) Citation

Sagan. The Demon-haunted World: Science as a Candle in the Dark. London: Headline, 1997.

MLA (8th ed.) Citation

Sagan. The Demon-haunted World: Science as a Candle in the Dark. Headline, 1997.

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