Efendi, Y. and Yusra (2014) “Bacillus subtilis Strain VITNJ1 Potential Probiotic Bacteria in the Gut of Tilapia (Oreochromis niloticus) are Cultured in Floating Net, Maninjau Lake, West Sumatra”, Pakistan Journal of Nutrition, 13(12), pp. 710–715. doi:10.3923/pjn.2014.710.715.