K. Nirmal Ravi Kumar. (2023). Objective Agricultural Economics . Daya Publishing , New Delhi.
Chicago-čujuhus (17. p.)K. Nirmal Ravi Kumar. Objective Agricultural Economics . Daya Publishing , New Delhi, 2023.
MLA-čujuhus (9. p.)K. Nirmal Ravi Kumar. Objective Agricultural Economics . Daya Publishing , New Delhi, 2023.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.