Cita APA (7th ed.)

Sagan, C. (1996). The demon-haunted world: Science as a candle in the dark. Ballantine.

Cita Chicago (17th ed.)

Sagan, Carl. The Demon-haunted World: Science as a Candle in the Dark. New York: Ballantine, 1996.

Cita MLA (9th ed.)

Sagan, Carl. The Demon-haunted World: Science as a Candle in the Dark. Ballantine, 1996.