Atapattu, N.S.B.M., and C.J. Nelligaswatta. “Effects of Citric Acid on the Performance and the Utilization of Phosphorous and Crude Protein in Broiler Chickens Fed on Rice By-Products Based Diets”. International Journal of Poultry Science 4, no. 12 (November 15, 2005): 990–993. Accessed September 21, 2025. https://ijpsjournal.org/index.php/ijps/article/view/466.