Journal of the Association of Environmental and Resource Economists. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Journal of the Association of Environmental and Resource Economists. Cambridge University Press.
Lua MLA (9ú heag.)Journal of the Association of Environmental and Resource Economists. Cambridge University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.