Voravit Siripholvat, and Suchart Sangunphan. “Effect of the Protein Level to the Growth Rate of Three-breed Chickens”. Agriculture and Natural Resources 26, no. 4 (December 30, 1992): 393–399. accessed August 28, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/241803.