Andini, Diah Ayu, et al. “Isolation and Identification of Biosurfactantproducing Bacteria from the Aerobic Pond of Oil Palm Liquid Waste at PT. Aek Loba Plantation”. Jurnal Biologi Tropis, vol. 24, no. 4, Oct. 2024, pp. 413-2, doi:10.29303/jbt.v24i4.7811.