Muhmood, A., A. Majeed, A. Niaz, S. S. H. Shah, and M. O. Shahid. “Evaluation of Anaerobic Digestate Potential As Organic Fertilizer in Improving Wheat Production and Soil Properties”. International Journal of Plant & Soil Science 24, no. 1 (August 21, 2018): 1-10. Accessed May 28, 2020. http://www.journalijpss.com/index.php/IJPSS/article/view/2998.