Arfah, H. et al. 2007. Effect of 17α-Methyltestosterone Hormone Manipulation in Various Water Temperatures on Sex Ratio of Guppy (Poecilia reticulata Peters). Jurnal Akuakultur Indonesia. 4, 1 (Jan. 2007), 37–40. DOI:https://doi.org/10.19027/jai.4.37-40.