Pandian, K. L. (2009). Global environmental Problems. ALP Books.
Chicago-čujuhus (17. p.)Pandian, K. L. Global Environmental Problems. New Dehli: ALP Books, 2009.
MLA-čujuhus (9. p.)Pandian, K. L. Global Environmental Problems. ALP Books, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.