Cita APA (7th ed.)

Sankar, U. (2001). Environmental economics. Oxford University Press.

Cita Chicago (17th ed.)

Sankar, Ulaganathan. Environmental Economics. New Delhi: Oxford University Press, 2001.

Cita MLA (9th ed.)

Sankar, Ulaganathan. Environmental Economics. Oxford University Press, 2001.

Atenció: Aquestes cites poden no estar 100% correctes.