Norton, G. A. (1984). Resource economics. E. Arnold.
Lua i Stíl Chicago (17ú heag.)Norton, G. A. Resource Economics. London ; Baltimore, Md., USA: E. Arnold, 1984.
Lua MLA (9ú heag.)Norton, G. A. Resource Economics. E. Arnold, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.