APA (7th ed.) Citation

Poundstone, W. (1999). Carl Sagan: A life in the cosmos. Henry Holt.

Chicago Style (17th ed.) Citation

Poundstone, William. Carl Sagan: A Life in the Cosmos. New York: Henry Holt, 1999.

MLA (9th ed.) Citation

Poundstone, William. Carl Sagan: A Life in the Cosmos. Henry Holt, 1999.

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