APA (7th ed.) Citation

Sperling, D., & Gordon, D. (2009). Two billion cars: Driving toward sustainability. Oxford University Press.

Chicago Style (17th ed.) Citation

Sperling, Daniel, and Deborah Gordon. Two Billion Cars: Driving Toward Sustainability. Oxford ; New York: Oxford University Press, 2009.

MLA (9th ed.) Citation

Sperling, Daniel, and Deborah Gordon. Two Billion Cars: Driving Toward Sustainability. Oxford University Press, 2009.