Kolstad, C. D. (2011). Intermediate Environmental Economics (2nd.). Oxford University Press.
Chicago-čujuhus (17. p.)Kolstad, Charles D. Intermediate Environmental Economics. 2nd. New Delhi: Oxford University Press, 2011.
MLA-čujuhus (9. p.)Kolstad, Charles D. Intermediate Environmental Economics. 2nd. Oxford University Press, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.