Khieokhajonkhet, A., and Surapon, K. 2020. “Effects of fish protein hydrolysate on the growth performance, feed and protein utilization of Nile tilapia (Oreochromis niloticus)”. International Journal of Agricultural Technology 16 (3):641-54. https://li04.tci-thaijo.org/index.php/IJAT/article/view/7008.