Ilmiah, , D. Dana, F. H. Pasaribu, and R. Affandi. 2007. “Increasing Thai Catfish’s Immunity (Pangasius Hypophthalmus Fowler) Using Ascorbic Acid”. Jurnal Akuakultur Indonesia 1 (2): 81-86. https://doi.org/10.19027/jai.1.81-86.