APA (7. basım) Alıntı

Roger Perman. (1999). Natural resource environmental economics. Financial Times, Prentice-Hall / Person Education.

Chicago Style (17. basım) Atıf

Roger Perman. Natural Resource Environmental Economics. Harlow: Financial Times, Prentice-Hall / Person Education, 1999.

MLA (9th ed.) Atıf

Roger Perman. Natural Resource Environmental Economics. Financial Times, Prentice-Hall / Person Education, 1999.