Hanley Nick. (2013). Introduction to Environmental Economics (n 2nd.). Oxford University Press.
Chicago Style aipamenaHanley Nick. Introduction to Environmental Economics. n 2nd. Great Britai: Oxford University Press, 2013.
MLA aipamenaHanley Nick. Introduction to Environmental Economics. n 2nd. Oxford University Press, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.