Perman, R., Ma, Y., & Common, M. (2003). Natural resource and environmental economics (3rd ed.). Financial Times Prentice Hall.
Citazione stile Chigago Style (17a edizione)Perman, Roger, Yue Ma, e Michael Common. Natural Resource and Environmental Economics. 3rd ed. Harlow, England: Financial Times Prentice Hall, 2003.
Citatione MLA (9a ed.)Perman, Roger, et al. Natural Resource and Environmental Economics. 3rd ed. Financial Times Prentice Hall, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.