Cita APA (7th ed.)

Field, B. C., & Field, M. K. (2006). Environmental economics: An introduction (Fourth edition.). McGraw-Hill Irwin.

Cita Chicago (17th ed.)

Field, Barry C., i Martha K. Field. Environmental Economics: An Introduction. Fourth edition. New York: McGraw-Hill Irwin, 2006.

Cita MLA (9th ed.)

Field, Barry C., i Martha K. Field. Environmental Economics: An Introduction. Fourth edition. McGraw-Hill Irwin, 2006.