Field,Barry C, & Field,Martha K. (2002). Environmental economics: An introduction (3.). McGraw Hill.
Chicago Edition CitationField,Barry C, i Field,Martha K. Environmental Economics: An Introduction. 3. New York: McGraw Hill, 2002.
Cita MLAField,Barry C, i Field,Martha K. Environmental Economics: An Introduction. 3. McGraw Hill, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.