Fitriatin, B. N., P. Suryatmana, A. Yuniarti, and N. Istifadah. “The Application of Phosphate Solubilizing Microbes Biofertilizer to Increase Soil P and Yield of Maize on Ultisols Jatinangor”. KnE Life Sciences, Vol. 2, no. 6, Nov. 2017, pp. 179-84, doi:10.18502/kls.v2i6.1037.