Hanley Nick. (2013). Introduction to Environmental Economics (n 2nd.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hanley Nick. Introduction to Environmental Economics. n 2nd. Great Britai: Oxford University Press, 2013.
Lua MLA (9ú heag.)Hanley Nick. Introduction to Environmental Economics. n 2nd. Oxford University Press, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.