Barthwal, R. (2009). Environmental Impact Assessment. New Age International.
Chicago-čujuhus (17. p.)Barthwal, R.R. Environmental Impact Assessment. New Delhi: New Age International, 2009.
MLA-čujuhus (9. p.)Barthwal, R.R. Environmental Impact Assessment. New Age International, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.