Sukenda, Rusli, Sri Nuryati, and Dendi Hidayatullah. 2016. “The Protective Duration of Streptococcus Agalactiae Vaccine in Nile Tilapia for the Prevention of Streptococcosis”. Jurnal Akuakultur Indonesia 14 (2), 192-201. https://doi.org/10.19027/jai.14.192-201.