Sperling, D., & Gordon, D. (2009). Two billion cars: Driving toward sustainability. Oxford University Press.
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Chicago-čujuhus (17. p.)
Sperling, Daniel, juo Deborah Gordon. Two Billion Cars: Driving Toward Sustainability. Oxford ; New York: Oxford University Press, 2009.
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MLA-čujuhus (9. p.)
Sperling, Daniel, juo Deborah Gordon. Two Billion Cars: Driving Toward Sustainability. Oxford University Press, 2009.
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