Sankar, U. (2002). Environmental economics. Oxford University Press.
Cita Chicago (17th ed.)Sankar, Ulaganathan. Environmental Economics. Delhi ; New York: Oxford University Press, 2002.
Cita MLA (9th ed.)Sankar, Ulaganathan. Environmental Economics. Oxford University Press, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.