Rashid, A., R. Khan, and H. atullah. “Contribution of Cereal-Legume Association to the Yield and Grain Quality of Cereals”. Biological Sciences - PJSIR, vol. 49, no. 4, Aug. 2006, pp. 290-5, https://v2.pjsir.org/index.php/biological-sciences/article/view/1208.