Bunnajirakul, Sumrarn, and Nutcharnart Tipmongkolsilp. 2018. “Effecicacy of Transfer Factor Substance as a Growth Promoter in Nile Tilapia (Oreochromis niloticus)”. Journal of Mahanakorn Veterinary Medicine 10 (1):41-48. https://li01.tci-thaijo.org/index.php/jmvm/article/view/159111.