(1992). Environmental problems: Prospects and constraints. Anmol Pub.
Chicago-čujuhus (17. p.)Environmental Problems: Prospects and Constraints. New Delhi: Anmol Pub, 1992.
MLA-čujuhus (9. p.)Environmental Problems: Prospects and Constraints. Anmol Pub, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.