SoelistyowatiD. T., SudrajatA. O. and ArfahH. (2013) “Masculinization on tilapia (Oreochromis sp.) by natural hormone steroid agent from bee resin through artificial diet”, Jurnal Akuakultur Indonesia, 9(2), pp. 178-183. doi: 10.19027/jai.9.178-183.