APA (7e ed.) Bronvermelding
Sperling, D., & Gordon, D. (2009). Two billion cars: Driving toward sustainability. Oxford University Press.
Chicago (17e ed.) Bronvermelding
Sperling, Daniel, en Deborah Gordon. Two Billion Cars: Driving Toward Sustainability. Oxford ; New York: Oxford University Press, 2009.
MLA (9e ed.) Bronvermelding
Sperling, Daniel, en Deborah Gordon. Two Billion Cars: Driving Toward Sustainability. Oxford University Press, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.