APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.