Cita APA (7th ed.)

Perman, R., Ma, Y., & Common, M. (2003). Natural resource and environmental economics (3rd ed.). Financial Times Prentice Hall.

Cita Chicago (17th ed.)

Perman, Roger, Yue Ma, i Michael Common. Natural Resource and Environmental Economics. 3rd ed. Harlow, England: Financial Times Prentice Hall, 2003.

Cita MLA (9th ed.)

Perman, Roger, et al. Natural Resource and Environmental Economics. 3rd ed. Financial Times Prentice Hall, 2003.