Citazione Stile APA (7a Edizione)

Perman, R. (2011). Natural resource and environmental economics (4th ed.). Pearson Addison Wesley.

Citazione stile Chigago Style (17a edizione)

Perman, Roger. Natural Resource and Environmental Economics. 4th ed. Harlow, Essex, New York: Pearson Addison Wesley, 2011.

Citatione MLA (9a ed.)

Perman, Roger. Natural Resource and Environmental Economics. 4th ed. Pearson Addison Wesley, 2011.