Norton, G. (1984). Resource economics. Edward Arnold.
Chicago-čujuhus (17. p.)Norton, G.A. Resource Economics. London: Edward Arnold, 1984.
MLA-čujuhus (9. p.)Norton, G.A. Resource Economics. Edward Arnold, 1984.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.