Cita APA (7th ed.)

Field, B. C. (1997). Environmental economics: An introduction (2nd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Field, Barry C. Environmental Economics: An Introduction. 2nd ed. New York: McGraw-Hill, 1997.

Cita MLA (8th ed.)

Field, Barry C. Environmental Economics: An Introduction. 2nd ed. McGraw-Hill, 1997.