GUPTA DINESH KUMAR. ENVIRONMENTAL STUDIES.
Chicago-čujuhus (17. p.)GUPTA DINESH KUMAR. ENVIRONMENTAL STUDIES.
MLA-čujuhus (9. p.)GUPTA DINESH KUMAR. ENVIRONMENTAL STUDIES.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.