Ray, D. (1999). Water and water resource management.
Chicago-čujuhus (17. p.)Ray, Datta. Water and Water Resource Management. New Delhi, 1999.
MLA-čujuhus (9. p.)Ray, Datta. Water and Water Resource Management. 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.