ZahraA., SukendaS., & WahjuningrumD. (2017). Extract of seaweed Gracilaria verrucosa as immunostimulant to controlling white spot disease in Pacific white shrimp Litopenaeus vannamei. Jurnal Akuakultur Indonesia, 16(2), 174-183. https://doi.org/10.19027/jai.16.2.174-183