F. Johnny, K. Mahardika, I. Giri, and D. Roza, “Addition of Vitamin C on Diet to Improve Immunity on Tiger Grouper, Epinephelus fuscoguttatus to Infection Viral Nervous Necrosis”, Jurnal Akuakultur Indonesia, vol. 6, no. 1, pp. 43–53, Jan. 2007, doi: 10.19027/jai.6.43-53.