Sethi, I. (1991). Environment: Modern dictionary. Discovery Pub.
Chicago-čujuhus (17. p.)Sethi, Inderjeet. Environment: Modern Dictionary. New Delhi: Discovery Pub, 1991.
MLA-čujuhus (9. p.)Sethi, Inderjeet. Environment: Modern Dictionary. Discovery Pub, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.