Lukkana, Mintra, Sasibha Jantrakajorn, and Janenuj Wongtavatchai. 2015. “In vitro Suppression against Streptococcal Bacteria and Health-Promoting Effects of Probiotic Bacillus polyfermenticus in Tilapia (Oreochromis niloticus)”. The Thai Journal of Veterinary Medicine 45 (1):121-29. https://he01.tci-thaijo.org/index.php/tjvm/article/view/32141.