Hanley, N., Shogren, J. F., & White, B. (2001). Introduction to environmental economics. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hanley, Nick, Jason F. Shogren, agus Ben White. Introduction to Environmental Economics. Oxford: Oxford University Press, 2001.
Lua MLA (9ú heag.)Hanley, Nick, et al. Introduction to Environmental Economics. Oxford University Press, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.