Sunarto. , Suriansyah. and Sabariah. (2008) “Effect of Dietary Vitamin C Ascorbic Acid on the Growth Performance and Immune Response of Betok Anabas testudineus Bloch”, Jurnal Akuakultur Indonesia, 7(2), pp. 151-157. doi: 10.19027/jai.7.151-157.