Wahjuningrum, D., et al. “Isolation and Identification of Pathogenic Proteolytic Bacteria from External Body Part of GIFT Tilapia Oreochromis Niloticus”. Jurnal Akuakultur Indonesia, vol. 8, no. 2, July 2009, pp. 169-74, https://doi.org/10.19027/jai.8.169-174.