Singh, G. .. (1979). Transformation of agriculture. Vishal Pub.
Chicago-čujuhus (17. p.)Singh, G .B. Transformation of Agriculture. Haryana: Vishal Pub, 1979.
MLA-čujuhus (9. p.)Singh, G .B. Transformation of Agriculture. Vishal Pub, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.