Ahmad, S., and M. Anwar. “?ECONOMIC GAIN FROM SUNFLOWER-MUNGBEAN INTERCROPPING SYSTEMS UNDER RAINFED CONDITIONS”. Biological Sciences - PJSIR, vol. 44, no. 3, June 2001, pp. 181-3, http://v2.pjsir.org/index.php/biological-sciences/article/view/1913.