Cita APA (7a ed.)

Field, B. C., & Field, M. K. (2009). Environmental economics: An introduction (5th ed.). McGraw Hill.

Cita Chicago Style (17a ed.)

Field, Barry C., y Martha K. Field. Environmental Economics: An Introduction. 5th ed. Singapore: McGraw Hill, 2009.

Cita MLA (9a ed.)

Field, Barry C., y Martha K. Field. Environmental Economics: An Introduction. 5th ed. McGraw Hill, 2009.