Conrad, J. M. (1999). Resource economics. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Conrad, Jon M. Resource Economics. Cambrdige, UK ; New York: Cambridge University Press, 1999.
Lua MLA (8ú heag.)Conrad, Jon M. Resource Economics. Cambridge University Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.