Παραπομπή APA

Hanley, N. (1997). Environmental economics in theory and practice. Macmillan.

Παραπομπή Chicago Style

Hanley, Nick. Environmental Economics in Theory and Practice. London: Macmillan, 1997.

Παραπομπή MLA

Hanley, Nick. Environmental Economics in Theory and Practice. Macmillan, 1997.