R. Widyastuti, I. K. Adiyaksa, D. Wulandari, and E. A. M. Zuhud, “Effect of Bio-Organic Fertilizer on Soil Organism in Experimental Oil Palm Plantation Cikabayan, Bogor, Indonesia”, J. Il. Tan. Lingk., vol. 27, no. 1, pp. 7–15, Apr. 2025, doi: 10.29244/jitl.27.1.7-15.