A. KUMAR, R. K. P. SINGH, K. M. SINGH, and J. S. MISHRA, “Economics of paddy (Oryza sativa) production: A comparative study of Bihar and Punjab”, Indian J Agri Sci, vol. 88, no. 2, pp. 314–319, Apr. 2018, doi: 10.56093/ijas.v88i2.79225.