Singh , A. (2006). Environment and water reources management. Adhyayan.
Chicago-čujuhus (17. p.)Singh , A. Environment and Water Reources Management. New Delhi: Adhyayan, 2006.
MLA-čujuhus (9. p.)Singh , A. Environment and Water Reources Management. Adhyayan, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.