Safitri, Mardiani, et al. “The Effect of Fermented Tofu Dregs Using EM4 Probiotics on Population Growth of Daphnia Magna”. Indonesian Journal of Aquaculture Medium, vol. 3, no. 3, Aug. 2023, pp. 140-8, doi:10.29303/mediaakuakultur.v3i3.3186.