Sondang, Yun, et al. “The Effect of Storage Time of Water Hyacinth Liquid Organic Fertilizer on Microorganism Viability and Potency ”. Jurnal Penelitian Pendidikan IPA, vol. 10, no. 12, Dec. 2024, pp. 10971-9, doi:10.29303/jppipa.v10i12.10018.