Diyanti, Afri R., M Z.H. Utama, and Milda Ernita. 2020. “The Effectiveness of Phosphate Solubilizing Rhizobacteria on The Growth and Yield of Several Soybean Varieties on Ultisol Soils”. Akta Agrosia 23 (2):77-82. https://doi.org/10.31186/aa.23.2.77-82.